From 0a1e5a7b1bd4024a303897a1edcf9b2d58ceda16 Mon Sep 17 00:00:00 2001
From: Fred Atherden <43879983+fred-atherden@users.noreply.github.com>
Date: Wed, 18 Dec 2024 11:10:01 +0000
Subject: [PATCH] RP - add checks for sub-article DOIs in RPs

---
 src/rp-schematron-base.sch                    |  17 ++
 src/rp-schematron.sch                         |   7 +
 src/rp-schematron.xsl                         | 230 ++++++++++++------
 .../sub-article-doi-check-1/fail.xml          |  16 ++
 .../sub-article-doi-check-1/pass.xml          |  16 ++
 .../sub-article-doi-check-1.sch               | 158 ++++++++++++
 .../sub-article-doi-check-2/fail.xml          |  16 ++
 .../sub-article-doi-check-2/pass.xml          |  16 ++
 .../sub-article-doi-check-2.sch               | 158 ++++++++++++
 .../sub-article-front-stub-check-1/fail.xml   |  14 ++
 .../sub-article-front-stub-check-1/pass.xml   |  16 ++
 .../sub-article-front-stub-check-1.sch        | 157 ++++++++++++
 test/xspec/rp-schematron.sch                  |  15 ++
 test/xspec/rp-schematron.xspec                |  34 +++
 14 files changed, 798 insertions(+), 72 deletions(-)
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/fail.xml
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/pass.xml
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/sub-article-doi-check-1.sch
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/fail.xml
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/pass.xml
 create mode 100644 test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/sub-article-doi-check-2.sch
 create mode 100644 test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/fail.xml
 create mode 100644 test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/pass.xml
 create mode 100644 test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/sub-article-front-stub-check-1.sch

diff --git a/src/rp-schematron-base.sch b/src/rp-schematron-base.sch
index 0107a153a6..3af866bc21 100644
--- a/src/rp-schematron-base.sch
+++ b/src/rp-schematron-base.sch
@@ -2005,6 +2005,23 @@
           role="error" 
           id="sub-article-title-check-3">The title of a <value-of select="$type"/> type sub-article should be 'Author response'. This one is: <value-of select="."/></report>
       </rule>
+      
+      <rule context="sub-article/front-stub" id="sub-article-front-stub-checks">       
+        <assert test="count(article-id[@pub-id-type='doi']) = 1" 
+          role="error" 
+          id="sub-article-front-stub-check-1">Sub-article must have one (and only one) &lt;article-id pub-id-type="doi"> element. This one does not.</assert>
+      </rule>
+      
+      <rule context="sub-article/front-stub/article-id[@pub-id-type='doi']" id="sub-article-doi-checks">       
+        <let name="article-version-doi" value="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+        <assert test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')" 
+          role="error" 
+          id="sub-article-doi-check-1">The DOI for this sub-article does not match the permitted format: <value-of select="."/>.</assert>
+        
+        <assert test="starts-with(.,$article-version-doi)" 
+          role="error" 
+          id="sub-article-doi-check-2">The DOI for this sub-article (<value-of select="."/>) does not start with the version DOI for the Reviewed Preprint (<value-of select="$article-version-doi"/>).</assert>
+      </rule>
     </pattern>
 
     <pattern id="arxiv-metadata">
diff --git a/src/rp-schematron.sch b/src/rp-schematron.sch
index 9e4c652754..38a9f2a4fa 100644
--- a/src/rp-schematron.sch
+++ b/src/rp-schematron.sch
@@ -1059,6 +1059,13 @@
         <report test="$type='referee-report' and not(matches(.,'^Reviewer #\d\d? \([Pp]ublic [Rr]eview\):?$|^Joint [Pp]ublic [Rr]eview:?$'))" role="error" id="sub-article-title-check-2">[sub-article-title-check-2] The title of a <value-of select="$type"/> type sub-article should be in one of the following formats: 'Reviewer #0 (public review)' or 'Joint public review'. This one is: <value-of select="."/></report>
         
         <report test="$type='author-comment' and not(matches(.,'^Author [Rr]esponse:?$'))" role="error" id="sub-article-title-check-3">[sub-article-title-check-3] The title of a <value-of select="$type"/> type sub-article should be 'Author response'. This one is: <value-of select="."/></report>
+      </rule></pattern><pattern id="sub-article-front-stub-checks-pattern"><rule context="sub-article/front-stub" id="sub-article-front-stub-checks">       
+        <assert test="count(article-id[@pub-id-type='doi']) = 1" role="error" id="sub-article-front-stub-check-1">[sub-article-front-stub-check-1] Sub-article must have one (and only one) &lt;article-id pub-id-type="doi"&gt; element. This one does not.</assert>
+      </rule></pattern><pattern id="sub-article-doi-checks-pattern"><rule context="sub-article/front-stub/article-id[@pub-id-type='doi']" id="sub-article-doi-checks">       
+        <let name="article-version-doi" value="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+        <assert test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')" role="error" id="sub-article-doi-check-1">[sub-article-doi-check-1] The DOI for this sub-article does not match the permitted format: <value-of select="."/>.</assert>
+        
+        <assert test="starts-with(.,$article-version-doi)" role="error" id="sub-article-doi-check-2">[sub-article-doi-check-2] The DOI for this sub-article (<value-of select="."/>) does not start with the version DOI for the Reviewed Preprint (<value-of select="$article-version-doi"/>).</assert>
       </rule></pattern>
 
     <pattern id="arxiv-journal-meta-checks-pattern"><rule context="article/front/journal-meta[lower-case(journal-id[1])='arxiv']" id="arxiv-journal-meta-checks">
diff --git a/src/rp-schematron.xsl b/src/rp-schematron.xsl
index 0aec6b2e50..97e1e6b2f9 100644
--- a/src/rp-schematron.xsl
+++ b/src/rp-schematron.xsl
@@ -1256,6 +1256,24 @@
             <xsl:apply-templates/>
          </svrl:active-pattern>
          <xsl:apply-templates select="/" mode="M125"/>
+         <svrl:active-pattern>
+            <xsl:attribute name="document">
+               <xsl:value-of select="document-uri(/)"/>
+            </xsl:attribute>
+            <xsl:attribute name="id">sub-article-front-stub-checks-pattern</xsl:attribute>
+            <xsl:attribute name="name">sub-article-front-stub-checks-pattern</xsl:attribute>
+            <xsl:apply-templates/>
+         </svrl:active-pattern>
+         <xsl:apply-templates select="/" mode="M126"/>
+         <svrl:active-pattern>
+            <xsl:attribute name="document">
+               <xsl:value-of select="document-uri(/)"/>
+            </xsl:attribute>
+            <xsl:attribute name="id">sub-article-doi-checks-pattern</xsl:attribute>
+            <xsl:attribute name="name">sub-article-doi-checks-pattern</xsl:attribute>
+            <xsl:apply-templates/>
+         </svrl:active-pattern>
+         <xsl:apply-templates select="/" mode="M127"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1264,7 +1282,7 @@
             <xsl:attribute name="name">arxiv-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M126"/>
+         <xsl:apply-templates select="/" mode="M128"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1273,7 +1291,7 @@
             <xsl:attribute name="name">arxiv-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M127"/>
+         <xsl:apply-templates select="/" mode="M129"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1282,7 +1300,7 @@
             <xsl:attribute name="name">res-square-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M128"/>
+         <xsl:apply-templates select="/" mode="M130"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1291,7 +1309,7 @@
             <xsl:attribute name="name">res-square-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M129"/>
+         <xsl:apply-templates select="/" mode="M131"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1300,7 +1318,7 @@
             <xsl:attribute name="name">psyarxiv-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M130"/>
+         <xsl:apply-templates select="/" mode="M132"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1309,7 +1327,7 @@
             <xsl:attribute name="name">psyarxiv-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M131"/>
+         <xsl:apply-templates select="/" mode="M133"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1318,7 +1336,7 @@
             <xsl:attribute name="name">osf-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M132"/>
+         <xsl:apply-templates select="/" mode="M134"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1327,7 +1345,7 @@
             <xsl:attribute name="name">osf-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M133"/>
+         <xsl:apply-templates select="/" mode="M135"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1336,7 +1354,7 @@
             <xsl:attribute name="name">ecoevorxiv-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M134"/>
+         <xsl:apply-templates select="/" mode="M136"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1345,7 +1363,7 @@
             <xsl:attribute name="name">ecoevorxiv-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M135"/>
+         <xsl:apply-templates select="/" mode="M137"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1354,7 +1372,7 @@
             <xsl:attribute name="name">authorea-journal-meta-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M136"/>
+         <xsl:apply-templates select="/" mode="M138"/>
          <svrl:active-pattern>
             <xsl:attribute name="document">
                <xsl:value-of select="document-uri(/)"/>
@@ -1363,7 +1381,7 @@
             <xsl:attribute name="name">authorea-doi-checks-pattern</xsl:attribute>
             <xsl:apply-templates/>
          </svrl:active-pattern>
-         <xsl:apply-templates select="/" mode="M137"/>
+         <xsl:apply-templates select="/" mode="M139"/>
       </svrl:schematron-output>
    </xsl:template>
    <!--SCHEMATRON PATTERNS-->
@@ -7327,9 +7345,77 @@
    <xsl:template match="@*|node()" priority="-2" mode="M125">
       <xsl:apply-templates select="*" mode="M125"/>
    </xsl:template>
+   <!--PATTERN sub-article-front-stub-checks-pattern-->
+   <!--RULE sub-article-front-stub-checks-->
+   <xsl:template match="sub-article/front-stub" priority="1000" mode="M126">
+
+		<!--ASSERT error-->
+      <xsl:choose>
+         <xsl:when test="count(article-id[@pub-id-type='doi']) = 1"/>
+         <xsl:otherwise>
+            <svrl:failed-assert xmlns:svrl="http://purl.oclc.org/dsdl/svrl" test="count(article-id[@pub-id-type='doi']) = 1">
+               <xsl:attribute name="id">sub-article-front-stub-check-1</xsl:attribute>
+               <xsl:attribute name="role">error</xsl:attribute>
+               <xsl:attribute name="location">
+                  <xsl:apply-templates select="." mode="schematron-select-full-path"/>
+               </xsl:attribute>
+               <svrl:text>[sub-article-front-stub-check-1] Sub-article must have one (and only one) &lt;article-id pub-id-type="doi"&gt; element. This one does not.</svrl:text>
+            </svrl:failed-assert>
+         </xsl:otherwise>
+      </xsl:choose>
+      <xsl:apply-templates select="*" mode="M126"/>
+   </xsl:template>
+   <xsl:template match="text()" priority="-1" mode="M126"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M126">
+      <xsl:apply-templates select="*" mode="M126"/>
+   </xsl:template>
+   <!--PATTERN sub-article-doi-checks-pattern-->
+   <!--RULE sub-article-doi-checks-->
+   <xsl:template match="sub-article/front-stub/article-id[@pub-id-type='doi']" priority="1000" mode="M127">
+      <xsl:variable name="article-version-doi" select="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+      <!--ASSERT error-->
+      <xsl:choose>
+         <xsl:when test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')"/>
+         <xsl:otherwise>
+            <svrl:failed-assert xmlns:svrl="http://purl.oclc.org/dsdl/svrl" test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')">
+               <xsl:attribute name="id">sub-article-doi-check-1</xsl:attribute>
+               <xsl:attribute name="role">error</xsl:attribute>
+               <xsl:attribute name="location">
+                  <xsl:apply-templates select="." mode="schematron-select-full-path"/>
+               </xsl:attribute>
+               <svrl:text>[sub-article-doi-check-1] The DOI for this sub-article does not match the permitted format: <xsl:text/>
+                  <xsl:value-of select="."/>
+                  <xsl:text/>.</svrl:text>
+            </svrl:failed-assert>
+         </xsl:otherwise>
+      </xsl:choose>
+      <!--ASSERT error-->
+      <xsl:choose>
+         <xsl:when test="starts-with(.,$article-version-doi)"/>
+         <xsl:otherwise>
+            <svrl:failed-assert xmlns:svrl="http://purl.oclc.org/dsdl/svrl" test="starts-with(.,$article-version-doi)">
+               <xsl:attribute name="id">sub-article-doi-check-2</xsl:attribute>
+               <xsl:attribute name="role">error</xsl:attribute>
+               <xsl:attribute name="location">
+                  <xsl:apply-templates select="." mode="schematron-select-full-path"/>
+               </xsl:attribute>
+               <svrl:text>[sub-article-doi-check-2] The DOI for this sub-article (<xsl:text/>
+                  <xsl:value-of select="."/>
+                  <xsl:text/>) does not start with the version DOI for the Reviewed Preprint (<xsl:text/>
+                  <xsl:value-of select="$article-version-doi"/>
+                  <xsl:text/>).</svrl:text>
+            </svrl:failed-assert>
+         </xsl:otherwise>
+      </xsl:choose>
+      <xsl:apply-templates select="*" mode="M127"/>
+   </xsl:template>
+   <xsl:template match="text()" priority="-1" mode="M127"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M127">
+      <xsl:apply-templates select="*" mode="M127"/>
+   </xsl:template>
    <!--PATTERN arxiv-journal-meta-checks-pattern-->
    <!--RULE arxiv-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='arxiv']" priority="1000" mode="M126">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='arxiv']" priority="1000" mode="M128">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7401,15 +7487,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M126"/>
+      <xsl:apply-templates select="*" mode="M128"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M126"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M126">
-      <xsl:apply-templates select="*" mode="M126"/>
+   <xsl:template match="text()" priority="-1" mode="M128"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M128">
+      <xsl:apply-templates select="*" mode="M128"/>
    </xsl:template>
    <!--PATTERN arxiv-doi-checks-pattern-->
    <!--RULE arxiv-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='arxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M127">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='arxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M129">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7427,15 +7513,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M127"/>
+      <xsl:apply-templates select="*" mode="M129"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M127"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M127">
-      <xsl:apply-templates select="*" mode="M127"/>
+   <xsl:template match="text()" priority="-1" mode="M129"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M129">
+      <xsl:apply-templates select="*" mode="M129"/>
    </xsl:template>
    <!--PATTERN res-square-journal-meta-checks-pattern-->
    <!--RULE res-square-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='rs']" priority="1000" mode="M128">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='rs']" priority="1000" mode="M130">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7507,15 +7593,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M128"/>
+      <xsl:apply-templates select="*" mode="M130"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M128"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M128">
-      <xsl:apply-templates select="*" mode="M128"/>
+   <xsl:template match="text()" priority="-1" mode="M130"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M130">
+      <xsl:apply-templates select="*" mode="M130"/>
    </xsl:template>
    <!--PATTERN res-square-doi-checks-pattern-->
    <!--RULE res-square-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='rs']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M129">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='rs']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M131">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7533,15 +7619,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M129"/>
+      <xsl:apply-templates select="*" mode="M131"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M129"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M129">
-      <xsl:apply-templates select="*" mode="M129"/>
+   <xsl:template match="text()" priority="-1" mode="M131"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M131">
+      <xsl:apply-templates select="*" mode="M131"/>
    </xsl:template>
    <!--PATTERN psyarxiv-journal-meta-checks-pattern-->
    <!--RULE psyarxiv-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='psyarxiv']" priority="1000" mode="M130">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='psyarxiv']" priority="1000" mode="M132">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7599,15 +7685,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M130"/>
+      <xsl:apply-templates select="*" mode="M132"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M130"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M130">
-      <xsl:apply-templates select="*" mode="M130"/>
+   <xsl:template match="text()" priority="-1" mode="M132"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M132">
+      <xsl:apply-templates select="*" mode="M132"/>
    </xsl:template>
    <!--PATTERN psyarxiv-doi-checks-pattern-->
    <!--RULE psyarxiv-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='psyarxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M131">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='psyarxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M133">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7625,15 +7711,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M131"/>
+      <xsl:apply-templates select="*" mode="M133"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M131"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M131">
-      <xsl:apply-templates select="*" mode="M131"/>
+   <xsl:template match="text()" priority="-1" mode="M133"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M133">
+      <xsl:apply-templates select="*" mode="M133"/>
    </xsl:template>
    <!--PATTERN osf-journal-meta-checks-pattern-->
    <!--RULE osf-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='osf preprints']" priority="1000" mode="M132">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='osf preprints']" priority="1000" mode="M134">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7691,15 +7777,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M132"/>
+      <xsl:apply-templates select="*" mode="M134"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M132"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M132">
-      <xsl:apply-templates select="*" mode="M132"/>
+   <xsl:template match="text()" priority="-1" mode="M134"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M134">
+      <xsl:apply-templates select="*" mode="M134"/>
    </xsl:template>
    <!--PATTERN osf-doi-checks-pattern-->
    <!--RULE osf-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='osf preprints']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M133">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='osf preprints']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M135">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7717,15 +7803,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M133"/>
+      <xsl:apply-templates select="*" mode="M135"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M133"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M133">
-      <xsl:apply-templates select="*" mode="M133"/>
+   <xsl:template match="text()" priority="-1" mode="M135"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M135">
+      <xsl:apply-templates select="*" mode="M135"/>
    </xsl:template>
    <!--PATTERN ecoevorxiv-journal-meta-checks-pattern-->
    <!--RULE ecoevorxiv-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='ecoevorxiv']" priority="1000" mode="M134">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='ecoevorxiv']" priority="1000" mode="M136">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7783,15 +7869,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M134"/>
+      <xsl:apply-templates select="*" mode="M136"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M134"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M134">
-      <xsl:apply-templates select="*" mode="M134"/>
+   <xsl:template match="text()" priority="-1" mode="M136"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M136">
+      <xsl:apply-templates select="*" mode="M136"/>
    </xsl:template>
    <!--PATTERN ecoevorxiv-doi-checks-pattern-->
    <!--RULE ecoevorxiv-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='ecoevorxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M135">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='ecoevorxiv']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M137">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7809,15 +7895,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M135"/>
+      <xsl:apply-templates select="*" mode="M137"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M135"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M135">
-      <xsl:apply-templates select="*" mode="M135"/>
+   <xsl:template match="text()" priority="-1" mode="M137"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M137">
+      <xsl:apply-templates select="*" mode="M137"/>
    </xsl:template>
    <!--PATTERN authorea-journal-meta-checks-pattern-->
    <!--RULE authorea-journal-meta-checks-->
-   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='authorea']" priority="1000" mode="M136">
+   <xsl:template match="article/front/journal-meta[lower-case(journal-id[1])='authorea']" priority="1000" mode="M138">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7875,15 +7961,15 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M136"/>
+      <xsl:apply-templates select="*" mode="M138"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M136"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M136">
-      <xsl:apply-templates select="*" mode="M136"/>
+   <xsl:template match="text()" priority="-1" mode="M138"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M138">
+      <xsl:apply-templates select="*" mode="M138"/>
    </xsl:template>
    <!--PATTERN authorea-doi-checks-pattern-->
    <!--RULE authorea-doi-checks-->
-   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='authorea']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M137">
+   <xsl:template match="article/front[journal-meta[lower-case(journal-id[1])='authorea']]/article-meta/article-id[@pub-id-type='doi']" priority="1000" mode="M139">
 
 		<!--ASSERT error-->
       <xsl:choose>
@@ -7901,10 +7987,10 @@
             </svrl:failed-assert>
          </xsl:otherwise>
       </xsl:choose>
-      <xsl:apply-templates select="*" mode="M137"/>
+      <xsl:apply-templates select="*" mode="M139"/>
    </xsl:template>
-   <xsl:template match="text()" priority="-1" mode="M137"/>
-   <xsl:template match="@*|node()" priority="-2" mode="M137">
-      <xsl:apply-templates select="*" mode="M137"/>
+   <xsl:template match="text()" priority="-1" mode="M139"/>
+   <xsl:template match="@*|node()" priority="-2" mode="M139">
+      <xsl:apply-templates select="*" mode="M139"/>
    </xsl:template>
 </xsl:stylesheet>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/fail.xml b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/fail.xml
new file mode 100644
index 0000000000..fabc652913
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/fail.xml
@@ -0,0 +1,16 @@
+<?oxygen SCHSchema="sub-article-doi-check-1.sch"?>
+<!--Context: sub-article/front-stub/article-id[@pub-id-type='doi']
+Test: assert    matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')
+Message: The DOI for this sub-article does not match the permitted format: . -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub>
+                <article-id pub-id-type="doi">10.7554/eLife.123456.1.sdsadsa0</article-id>
+            </front-stub>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/pass.xml b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/pass.xml
new file mode 100644
index 0000000000..74e1ad1669
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/pass.xml
@@ -0,0 +1,16 @@
+<?oxygen SCHSchema="sub-article-doi-check-1.sch"?>
+<!--Context: sub-article/front-stub/article-id[@pub-id-type='doi']
+Test: assert    matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')
+Message: The DOI for this sub-article does not match the permitted format: . -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub>
+                <article-id pub-id-type="doi">10.7554/eLife.123456.1.sa0</article-id>
+            </front-stub>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/sub-article-doi-check-1.sch b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/sub-article-doi-check-1.sch
new file mode 100644
index 0000000000..3b1b2c9110
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-1/sub-article-doi-check-1.sch
@@ -0,0 +1,158 @@
+<schema xmlns="http://purl.oclc.org/dsdl/schematron" xmlns:meca="http://manuscriptexchange.org" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:file="java.io.File" xmlns:java="http://www.java.com/" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xlink="http://www.w3.org/1999/xlink" queryBinding="xslt2">
+  <title>eLife reviewed preprint schematron</title>
+  <ns uri="http://www.niso.org/schemas/ali/1.0/" prefix="ali"/>
+  <ns uri="http://www.w3.org/XML/1998/namespace" prefix="xml"/>
+  <ns uri="http://www.w3.org/1999/xlink" prefix="xlink"/>
+  <ns uri="http://www.w3.org/2001/XInclude" prefix="xi"/>
+  <ns uri="http://www.w3.org/1998/Math/MathML" prefix="mml"/>
+  <ns uri="http://saxon.sf.net/" prefix="saxon"/>
+  <ns uri="http://purl.org/dc/terms/" prefix="dc"/>
+  <ns uri="http://www.w3.org/2001/XMLSchema" prefix="xs"/>
+  <ns uri="https://elifesciences.org/namespace" prefix="e"/>
+  <ns uri="java.io.File" prefix="file"/>
+  <ns uri="http://www.java.com/" prefix="java"/>
+  <ns uri="http://manuscriptexchange.org" prefix="meca"/>
+  <xsl:function name="e:isbn-sum" as="xs:integer">
+    <xsl:param name="s" as="xs:string"/>
+    <xsl:choose>
+      <xsl:when test="string-length($s) = 10">
+        <xsl:variable name="d1" select="number(substring($s,1,1)) * 10"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 9"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1)) * 8"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 7"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1)) * 6"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 5"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1)) * 4"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1)) * 2"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 1"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10) mod 11"/>
+      </xsl:when>
+      <xsl:when test="string-length($s) = 13">
+        <xsl:variable name="d1" select="number(substring($s,1,1))"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 3"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1))"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 3"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1))"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 3"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1))"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1))"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 3"/>
+        <xsl:variable name="d11" select="number(substring($s,11,1))"/>
+        <xsl:variable name="d12" select="number(substring($s,12,1)) * 3"/>
+        <xsl:variable name="d13" select="number(substring($s,13,1))"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10 + $d11 + $d12 + $d13) mod 10"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="number('1')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:is-valid-issn" as="xs:boolean">
+      <xsl:param name="s" as="xs:string"/>
+      <xsl:choose>
+        <xsl:when test="not(matches($s,'^\d{4}\-\d{3}[\dX]$'))">
+          <xsl:value-of select="false()"/>
+        </xsl:when>
+        <xsl:otherwise>
+            <xsl:variable name="d1" select="number(substring($s,1,1)) * 8"/>
+            <xsl:variable name="d2" select="number(substring($s,2,1)) * 7"/>
+            <xsl:variable name="d3" select="number(substring($s,3,1)) * 6"/>
+            <xsl:variable name="d4" select="number(substring($s,4,1)) * 5"/>
+            <xsl:variable name="d5" select="number(substring($s,6,1)) * 4"/>
+            <xsl:variable name="d6" select="number(substring($s,7,1)) * 3"/>
+            <xsl:variable name="d7" select="number(substring($s,8,1)) * 2"/>
+            <xsl:variable name="remainder" select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7) mod 11"/>
+            <xsl:variable name="calc" select="if ($remainder=0) then 0 else (11 - $remainder)"/>
+            <xsl:variable name="check" select="if (substring($s,9,1)='X') then 10 else number(substring($s,9,1))"/>
+            <xsl:value-of select="$calc = $check"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:function>
+  <xsl:function name="e:get-name" as="xs:string">
+    <xsl:param name="name"/>
+    <xsl:choose>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="$name/surname[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="'No elements present'"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-copyright-holder">
+    <xsl:param name="contrib-group"/>
+    <xsl:variable name="author-count" select="count($contrib-group/contrib[@contrib-type='author'])"/>
+    <xsl:choose>
+      <xsl:when test="$author-count lt 1"/>
+      <xsl:when test="$author-count = 1">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1]"/>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/name[1]/surname[1]"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      <xsl:when test="$author-count = 2">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:choose>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab and $contrib-group/contrib[@contrib-type='author'][2]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author']/collab[2]/text()[1])"/>
+              </xsl:when>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+              </xsl:when>
+              <xsl:otherwise>
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/collab[1]/text()[1])"/>
+              </xsl:otherwise>
+            </xsl:choose>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      
+      <xsl:otherwise>
+        <xsl:variable name="is-equal-contrib" select="if ($contrib-group/contrib[@contrib-type='author'][1]/@equal-contrib='yes') then true() else false()"/>
+        
+        <xsl:value-of select="concat(e:get-surname($contrib-group/contrib[@contrib-type='author'][1]),' et al')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-surname" as="text()">
+    <xsl:param name="contrib"/>
+    <xsl:choose>
+      <xsl:when test="$contrib/collab">
+        <xsl:value-of select="$contrib/collab[1]/text()[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$contrib//name[1]/surname[1]"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <pattern id="sub-article-doi-checks-pattern">
+    <rule context="sub-article/front-stub/article-id[@pub-id-type='doi']" id="sub-article-doi-checks">
+      <let name="article-version-doi" value="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+      <assert test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')" role="error" id="sub-article-doi-check-1">[sub-article-doi-check-1] The DOI for this sub-article does not match the permitted format: <value-of select="."/>.</assert>
+    </rule>
+  </pattern>
+  <pattern id="root-pattern">
+    <rule context="root" id="root-rule">
+      <assert test="descendant::sub-article/front-stub/article-id[@pub-id-type='doi']" role="error" id="sub-article-doi-checks-xspec-assert">sub-article/front-stub/article-id[@pub-id-type='doi'] must be present.</assert>
+    </rule>
+  </pattern>
+</schema>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/fail.xml b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/fail.xml
new file mode 100644
index 0000000000..667c8fb8e5
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/fail.xml
@@ -0,0 +1,16 @@
+<?oxygen SCHSchema="sub-article-doi-check-2.sch"?>
+<!--Context: sub-article/front-stub/article-id[@pub-id-type='doi']
+Test: assert    starts-with(.,$article-version-doi)
+Message: The DOI for this sub-article () does not start with the version DOI for the Reviewed Preprint (). -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub>
+                <article-id pub-id-type="doi">10.7554/eLife.123456.2.sa0</article-id>
+            </front-stub>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/pass.xml b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/pass.xml
new file mode 100644
index 0000000000..56799a1530
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/pass.xml
@@ -0,0 +1,16 @@
+<?oxygen SCHSchema="sub-article-doi-check-2.sch"?>
+<!--Context: sub-article/front-stub/article-id[@pub-id-type='doi']
+Test: assert    starts-with(.,$article-version-doi)
+Message: The DOI for this sub-article () does not start with the version DOI for the Reviewed Preprint (). -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub>
+                <article-id pub-id-type="doi">10.7554/eLife.123456.1.sa0</article-id>
+            </front-stub>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/sub-article-doi-check-2.sch b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/sub-article-doi-check-2.sch
new file mode 100644
index 0000000000..b076b952ed
--- /dev/null
+++ b/test/tests/rp/sub-article-doi-checks/sub-article-doi-check-2/sub-article-doi-check-2.sch
@@ -0,0 +1,158 @@
+<schema xmlns="http://purl.oclc.org/dsdl/schematron" xmlns:meca="http://manuscriptexchange.org" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:file="java.io.File" xmlns:java="http://www.java.com/" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xlink="http://www.w3.org/1999/xlink" queryBinding="xslt2">
+  <title>eLife reviewed preprint schematron</title>
+  <ns uri="http://www.niso.org/schemas/ali/1.0/" prefix="ali"/>
+  <ns uri="http://www.w3.org/XML/1998/namespace" prefix="xml"/>
+  <ns uri="http://www.w3.org/1999/xlink" prefix="xlink"/>
+  <ns uri="http://www.w3.org/2001/XInclude" prefix="xi"/>
+  <ns uri="http://www.w3.org/1998/Math/MathML" prefix="mml"/>
+  <ns uri="http://saxon.sf.net/" prefix="saxon"/>
+  <ns uri="http://purl.org/dc/terms/" prefix="dc"/>
+  <ns uri="http://www.w3.org/2001/XMLSchema" prefix="xs"/>
+  <ns uri="https://elifesciences.org/namespace" prefix="e"/>
+  <ns uri="java.io.File" prefix="file"/>
+  <ns uri="http://www.java.com/" prefix="java"/>
+  <ns uri="http://manuscriptexchange.org" prefix="meca"/>
+  <xsl:function name="e:isbn-sum" as="xs:integer">
+    <xsl:param name="s" as="xs:string"/>
+    <xsl:choose>
+      <xsl:when test="string-length($s) = 10">
+        <xsl:variable name="d1" select="number(substring($s,1,1)) * 10"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 9"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1)) * 8"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 7"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1)) * 6"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 5"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1)) * 4"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1)) * 2"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 1"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10) mod 11"/>
+      </xsl:when>
+      <xsl:when test="string-length($s) = 13">
+        <xsl:variable name="d1" select="number(substring($s,1,1))"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 3"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1))"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 3"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1))"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 3"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1))"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1))"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 3"/>
+        <xsl:variable name="d11" select="number(substring($s,11,1))"/>
+        <xsl:variable name="d12" select="number(substring($s,12,1)) * 3"/>
+        <xsl:variable name="d13" select="number(substring($s,13,1))"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10 + $d11 + $d12 + $d13) mod 10"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="number('1')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:is-valid-issn" as="xs:boolean">
+      <xsl:param name="s" as="xs:string"/>
+      <xsl:choose>
+        <xsl:when test="not(matches($s,'^\d{4}\-\d{3}[\dX]$'))">
+          <xsl:value-of select="false()"/>
+        </xsl:when>
+        <xsl:otherwise>
+            <xsl:variable name="d1" select="number(substring($s,1,1)) * 8"/>
+            <xsl:variable name="d2" select="number(substring($s,2,1)) * 7"/>
+            <xsl:variable name="d3" select="number(substring($s,3,1)) * 6"/>
+            <xsl:variable name="d4" select="number(substring($s,4,1)) * 5"/>
+            <xsl:variable name="d5" select="number(substring($s,6,1)) * 4"/>
+            <xsl:variable name="d6" select="number(substring($s,7,1)) * 3"/>
+            <xsl:variable name="d7" select="number(substring($s,8,1)) * 2"/>
+            <xsl:variable name="remainder" select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7) mod 11"/>
+            <xsl:variable name="calc" select="if ($remainder=0) then 0 else (11 - $remainder)"/>
+            <xsl:variable name="check" select="if (substring($s,9,1)='X') then 10 else number(substring($s,9,1))"/>
+            <xsl:value-of select="$calc = $check"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:function>
+  <xsl:function name="e:get-name" as="xs:string">
+    <xsl:param name="name"/>
+    <xsl:choose>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="$name/surname[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="'No elements present'"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-copyright-holder">
+    <xsl:param name="contrib-group"/>
+    <xsl:variable name="author-count" select="count($contrib-group/contrib[@contrib-type='author'])"/>
+    <xsl:choose>
+      <xsl:when test="$author-count lt 1"/>
+      <xsl:when test="$author-count = 1">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1]"/>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/name[1]/surname[1]"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      <xsl:when test="$author-count = 2">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:choose>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab and $contrib-group/contrib[@contrib-type='author'][2]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author']/collab[2]/text()[1])"/>
+              </xsl:when>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+              </xsl:when>
+              <xsl:otherwise>
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/collab[1]/text()[1])"/>
+              </xsl:otherwise>
+            </xsl:choose>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      
+      <xsl:otherwise>
+        <xsl:variable name="is-equal-contrib" select="if ($contrib-group/contrib[@contrib-type='author'][1]/@equal-contrib='yes') then true() else false()"/>
+        
+        <xsl:value-of select="concat(e:get-surname($contrib-group/contrib[@contrib-type='author'][1]),' et al')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-surname" as="text()">
+    <xsl:param name="contrib"/>
+    <xsl:choose>
+      <xsl:when test="$contrib/collab">
+        <xsl:value-of select="$contrib/collab[1]/text()[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$contrib//name[1]/surname[1]"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <pattern id="sub-article-doi-checks-pattern">
+    <rule context="sub-article/front-stub/article-id[@pub-id-type='doi']" id="sub-article-doi-checks">
+      <let name="article-version-doi" value="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+      <assert test="starts-with(.,$article-version-doi)" role="error" id="sub-article-doi-check-2">[sub-article-doi-check-2] The DOI for this sub-article (<value-of select="."/>) does not start with the version DOI for the Reviewed Preprint (<value-of select="$article-version-doi"/>).</assert>
+    </rule>
+  </pattern>
+  <pattern id="root-pattern">
+    <rule context="root" id="root-rule">
+      <assert test="descendant::sub-article/front-stub/article-id[@pub-id-type='doi']" role="error" id="sub-article-doi-checks-xspec-assert">sub-article/front-stub/article-id[@pub-id-type='doi'] must be present.</assert>
+    </rule>
+  </pattern>
+</schema>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/fail.xml b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/fail.xml
new file mode 100644
index 0000000000..4fc0e3af54
--- /dev/null
+++ b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/fail.xml
@@ -0,0 +1,14 @@
+<?oxygen SCHSchema="sub-article-front-stub-check-1.sch"?>
+<!--Context: sub-article/front-stub
+Test: assert    count(article-id[@pub-id-type='doi']) = 1
+Message: Sub-article must have one (and only one) <article-id pub-id-type="doi"> element. This one does not. -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub/>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/pass.xml b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/pass.xml
new file mode 100644
index 0000000000..08ae954409
--- /dev/null
+++ b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/pass.xml
@@ -0,0 +1,16 @@
+<?oxygen SCHSchema="sub-article-front-stub-check-1.sch"?>
+<!--Context: sub-article/front-stub
+Test: assert    count(article-id[@pub-id-type='doi']) = 1
+Message: Sub-article must have one (and only one) <article-id pub-id-type="doi"> element. This one does not. -->
+<root xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <article>
+        <article-meta>
+            <article-id pub-id-type="doi" specific-use="version">10.7554/eLife.123456.1</article-id>
+        </article-meta>
+        <sub-article id="sa0" article-type="referee-report">
+            <front-stub>
+                <article-id pub-id-type="doi">10.7554/eLife.123456.1.sa0</article-id>
+            </front-stub>
+        </sub-article>
+    </article>
+</root>
\ No newline at end of file
diff --git a/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/sub-article-front-stub-check-1.sch b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/sub-article-front-stub-check-1.sch
new file mode 100644
index 0000000000..ca77be2e2f
--- /dev/null
+++ b/test/tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/sub-article-front-stub-check-1.sch
@@ -0,0 +1,157 @@
+<schema xmlns="http://purl.oclc.org/dsdl/schematron" xmlns:meca="http://manuscriptexchange.org" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:file="java.io.File" xmlns:java="http://www.java.com/" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xlink="http://www.w3.org/1999/xlink" queryBinding="xslt2">
+  <title>eLife reviewed preprint schematron</title>
+  <ns uri="http://www.niso.org/schemas/ali/1.0/" prefix="ali"/>
+  <ns uri="http://www.w3.org/XML/1998/namespace" prefix="xml"/>
+  <ns uri="http://www.w3.org/1999/xlink" prefix="xlink"/>
+  <ns uri="http://www.w3.org/2001/XInclude" prefix="xi"/>
+  <ns uri="http://www.w3.org/1998/Math/MathML" prefix="mml"/>
+  <ns uri="http://saxon.sf.net/" prefix="saxon"/>
+  <ns uri="http://purl.org/dc/terms/" prefix="dc"/>
+  <ns uri="http://www.w3.org/2001/XMLSchema" prefix="xs"/>
+  <ns uri="https://elifesciences.org/namespace" prefix="e"/>
+  <ns uri="java.io.File" prefix="file"/>
+  <ns uri="http://www.java.com/" prefix="java"/>
+  <ns uri="http://manuscriptexchange.org" prefix="meca"/>
+  <xsl:function name="e:isbn-sum" as="xs:integer">
+    <xsl:param name="s" as="xs:string"/>
+    <xsl:choose>
+      <xsl:when test="string-length($s) = 10">
+        <xsl:variable name="d1" select="number(substring($s,1,1)) * 10"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 9"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1)) * 8"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 7"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1)) * 6"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 5"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1)) * 4"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1)) * 2"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 1"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10) mod 11"/>
+      </xsl:when>
+      <xsl:when test="string-length($s) = 13">
+        <xsl:variable name="d1" select="number(substring($s,1,1))"/>
+        <xsl:variable name="d2" select="number(substring($s,2,1)) * 3"/>
+        <xsl:variable name="d3" select="number(substring($s,3,1))"/>
+        <xsl:variable name="d4" select="number(substring($s,4,1)) * 3"/>
+        <xsl:variable name="d5" select="number(substring($s,5,1))"/>
+        <xsl:variable name="d6" select="number(substring($s,6,1)) * 3"/>
+        <xsl:variable name="d7" select="number(substring($s,7,1))"/>
+        <xsl:variable name="d8" select="number(substring($s,8,1)) * 3"/>
+        <xsl:variable name="d9" select="number(substring($s,9,1))"/>
+        <xsl:variable name="d10" select="number(substring($s,10,1)) * 3"/>
+        <xsl:variable name="d11" select="number(substring($s,11,1))"/>
+        <xsl:variable name="d12" select="number(substring($s,12,1)) * 3"/>
+        <xsl:variable name="d13" select="number(substring($s,13,1))"/>
+        <xsl:value-of select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7 + $d8 + $d9 + $d10 + $d11 + $d12 + $d13) mod 10"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="number('1')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:is-valid-issn" as="xs:boolean">
+      <xsl:param name="s" as="xs:string"/>
+      <xsl:choose>
+        <xsl:when test="not(matches($s,'^\d{4}\-\d{3}[\dX]$'))">
+          <xsl:value-of select="false()"/>
+        </xsl:when>
+        <xsl:otherwise>
+            <xsl:variable name="d1" select="number(substring($s,1,1)) * 8"/>
+            <xsl:variable name="d2" select="number(substring($s,2,1)) * 7"/>
+            <xsl:variable name="d3" select="number(substring($s,3,1)) * 6"/>
+            <xsl:variable name="d4" select="number(substring($s,4,1)) * 5"/>
+            <xsl:variable name="d5" select="number(substring($s,6,1)) * 4"/>
+            <xsl:variable name="d6" select="number(substring($s,7,1)) * 3"/>
+            <xsl:variable name="d7" select="number(substring($s,8,1)) * 2"/>
+            <xsl:variable name="remainder" select="number($d1 + $d2 + $d3 + $d4 + $d5 + $d6 + $d7) mod 11"/>
+            <xsl:variable name="calc" select="if ($remainder=0) then 0 else (11 - $remainder)"/>
+            <xsl:variable name="check" select="if (substring($s,9,1)='X') then 10 else number(substring($s,9,1))"/>
+            <xsl:value-of select="$calc = $check"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:function>
+  <xsl:function name="e:get-name" as="xs:string">
+    <xsl:param name="name"/>
+    <xsl:choose>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and $name/suffix[1]">
+        <xsl:value-of select="concat($name/surname[1],' ',$name/suffix[1])"/>
+      </xsl:when>
+      <xsl:when test="$name/given-names[1] and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="concat($name/given-names[1],' ',$name/surname[1])"/>
+      </xsl:when>
+      <xsl:when test="not($name/given-names[1]) and $name/surname[1] and not($name/suffix[1])">
+        <xsl:value-of select="$name/surname[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="'No elements present'"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-copyright-holder">
+    <xsl:param name="contrib-group"/>
+    <xsl:variable name="author-count" select="count($contrib-group/contrib[@contrib-type='author'])"/>
+    <xsl:choose>
+      <xsl:when test="$author-count lt 1"/>
+      <xsl:when test="$author-count = 1">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1]"/>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="$contrib-group/contrib[@contrib-type='author']/name[1]/surname[1]"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      <xsl:when test="$author-count = 2">
+        <xsl:choose>
+          <xsl:when test="$contrib-group/contrib[@contrib-type='author']/collab">
+            <xsl:choose>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab and $contrib-group/contrib[@contrib-type='author'][2]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author']/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author']/collab[2]/text()[1])"/>
+              </xsl:when>
+              <xsl:when test="$contrib-group/contrib[@contrib-type='author'][1]/collab">
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/collab[1]/text()[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+              </xsl:when>
+              <xsl:otherwise>
+                <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/collab[1]/text()[1])"/>
+              </xsl:otherwise>
+            </xsl:choose>
+          </xsl:when>
+          <xsl:otherwise>
+            <xsl:value-of select="concat($contrib-group/contrib[@contrib-type='author'][1]/name[1]/surname[1],' &amp; ',$contrib-group/contrib[@contrib-type='author'][2]/name[1]/surname[1])"/>
+          </xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      
+      <xsl:otherwise>
+        <xsl:variable name="is-equal-contrib" select="if ($contrib-group/contrib[@contrib-type='author'][1]/@equal-contrib='yes') then true() else false()"/>
+        
+        <xsl:value-of select="concat(e:get-surname($contrib-group/contrib[@contrib-type='author'][1]),' et al')"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <xsl:function name="e:get-surname" as="text()">
+    <xsl:param name="contrib"/>
+    <xsl:choose>
+      <xsl:when test="$contrib/collab">
+        <xsl:value-of select="$contrib/collab[1]/text()[1]"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$contrib//name[1]/surname[1]"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:function>
+  <pattern id="sub-article-front-stub-checks-pattern">
+    <rule context="sub-article/front-stub" id="sub-article-front-stub-checks">
+      <assert test="count(article-id[@pub-id-type='doi']) = 1" role="error" id="sub-article-front-stub-check-1">[sub-article-front-stub-check-1] Sub-article must have one (and only one) &lt;article-id pub-id-type="doi"&gt; element. This one does not.</assert>
+    </rule>
+  </pattern>
+  <pattern id="root-pattern">
+    <rule context="root" id="root-rule">
+      <assert test="descendant::sub-article/front-stub" role="error" id="sub-article-front-stub-checks-xspec-assert">sub-article/front-stub must be present.</assert>
+    </rule>
+  </pattern>
+</schema>
\ No newline at end of file
diff --git a/test/xspec/rp-schematron.sch b/test/xspec/rp-schematron.sch
index 40e6a1f08e..3ef0cbc38a 100644
--- a/test/xspec/rp-schematron.sch
+++ b/test/xspec/rp-schematron.sch
@@ -1445,6 +1445,19 @@
       </report>
       </rule>
   </pattern>
+  <pattern id="sub-article-front-stub-checks-pattern">
+    <rule context="sub-article/front-stub" id="sub-article-front-stub-checks">       
+        <assert test="count(article-id[@pub-id-type='doi']) = 1" role="error" id="sub-article-front-stub-check-1">Sub-article must have one (and only one) &lt;article-id pub-id-type="doi"&gt; element. This one does not.</assert>
+      </rule>
+  </pattern>
+  <pattern id="sub-article-doi-checks-pattern">
+    <rule context="sub-article/front-stub/article-id[@pub-id-type='doi']" id="sub-article-doi-checks">       
+        <let name="article-version-doi" value="ancestor::article//article-meta/article-id[@pub-id-type='doi' and @specific-use='version']"/>
+        <assert test="matches(.,'^10\.7554/eLife\.\d{5,6}\.\d\.sa\d$')" role="error" id="sub-article-doi-check-1">The DOI for this sub-article does not match the permitted format: <value-of select="."/>.</assert>
+        
+        <assert test="starts-with(.,$article-version-doi)" role="error" id="sub-article-doi-check-2">The DOI for this sub-article (<value-of select="."/>) does not start with the version DOI for the Reviewed Preprint (<value-of select="$article-version-doi"/>).</assert>
+      </rule>
+  </pattern>
 
     <pattern id="arxiv-journal-meta-checks-pattern">
     <rule context="article/front/journal-meta[lower-case(journal-id[1])='arxiv']" id="arxiv-journal-meta-checks">
@@ -1664,6 +1677,8 @@
       <assert test="descendant::sub-article[@article-type='editor-report']/body/p[1]//bold" role="error" id="ed-report-bold-terms-xspec-assert">sub-article[@article-type='editor-report']/body/p[1]//bold must be present.</assert>
       <assert test="descendant::sub-article[@article-type='author-comment']/body//bold[not(preceding-sibling::text() or preceding-sibling::*) and (parent::p/following-sibling::*[1]/ext-link/inline-graphic or parent::p/following-sibling::*[2]/ext-link/inline-graphic)]" role="error" id="ar-bold-checks-xspec-assert">sub-article[@article-type='author-comment']/body//bold[not(preceding-sibling::text() or preceding-sibling::*) and (parent::p/following-sibling::*[1]/ext-link/inline-graphic or parent::p/following-sibling::*[2]/ext-link/inline-graphic)] must be present.</assert>
       <assert test="descendant::sub-article/front-stub/title-group/article-title" role="error" id="sub-article-title-checks-xspec-assert">sub-article/front-stub/title-group/article-title must be present.</assert>
+      <assert test="descendant::sub-article/front-stub" role="error" id="sub-article-front-stub-checks-xspec-assert">sub-article/front-stub must be present.</assert>
+      <assert test="descendant::sub-article/front-stub/article-id[@pub-id-type='doi']" role="error" id="sub-article-doi-checks-xspec-assert">sub-article/front-stub/article-id[@pub-id-type='doi'] must be present.</assert>
       <assert test="descendant::article/front/journal-meta[lower-case(journal-id[1])='arxiv']" role="error" id="arxiv-journal-meta-checks-xspec-assert">article/front/journal-meta[lower-case(journal-id[1])='arxiv'] must be present.</assert>
       <assert test="descendant::article/front[journal-meta[lower-case(journal-id[1])='arxiv']]/article-meta/article-id[@pub-id-type='doi']" role="error" id="arxiv-doi-checks-xspec-assert">article/front[journal-meta[lower-case(journal-id[1])='arxiv']]/article-meta/article-id[@pub-id-type='doi'] must be present.</assert>
       <assert test="descendant::article/front/journal-meta[lower-case(journal-id[1])='rs']" role="error" id="res-square-journal-meta-checks-xspec-assert">article/front/journal-meta[lower-case(journal-id[1])='rs'] must be present.</assert>
diff --git a/test/xspec/rp-schematron.xspec b/test/xspec/rp-schematron.xspec
index f7a6cd4b3b..3162594bbb 100644
--- a/test/xspec/rp-schematron.xspec
+++ b/test/xspec/rp-schematron.xspec
@@ -3496,6 +3496,40 @@
         <x:expect-not-assert id="sub-article-title-checks-xspec-assert" role="error"/>
       </x:scenario>
     </x:scenario>
+    <x:scenario label="sub-article-front-stub-checks">
+      <x:scenario label="sub-article-front-stub-check-1-pass">
+        <x:context href="../tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/pass.xml"/>
+        <x:expect-not-assert id="sub-article-front-stub-check-1" role="error"/>
+        <x:expect-not-assert id="sub-article-front-stub-checks-xspec-assert" role="error"/>
+      </x:scenario>
+      <x:scenario label="sub-article-front-stub-check-1-fail">
+        <x:context href="../tests/rp/sub-article-front-stub-checks/sub-article-front-stub-check-1/fail.xml"/>
+        <x:expect-assert id="sub-article-front-stub-check-1" role="error"/>
+        <x:expect-not-assert id="sub-article-front-stub-checks-xspec-assert" role="error"/>
+      </x:scenario>
+    </x:scenario>
+    <x:scenario label="sub-article-doi-checks">
+      <x:scenario label="sub-article-doi-check-1-pass">
+        <x:context href="../tests/rp/sub-article-doi-checks/sub-article-doi-check-1/pass.xml"/>
+        <x:expect-not-assert id="sub-article-doi-check-1" role="error"/>
+        <x:expect-not-assert id="sub-article-doi-checks-xspec-assert" role="error"/>
+      </x:scenario>
+      <x:scenario label="sub-article-doi-check-1-fail">
+        <x:context href="../tests/rp/sub-article-doi-checks/sub-article-doi-check-1/fail.xml"/>
+        <x:expect-assert id="sub-article-doi-check-1" role="error"/>
+        <x:expect-not-assert id="sub-article-doi-checks-xspec-assert" role="error"/>
+      </x:scenario>
+      <x:scenario label="sub-article-doi-check-2-pass">
+        <x:context href="../tests/rp/sub-article-doi-checks/sub-article-doi-check-2/pass.xml"/>
+        <x:expect-not-assert id="sub-article-doi-check-2" role="error"/>
+        <x:expect-not-assert id="sub-article-doi-checks-xspec-assert" role="error"/>
+      </x:scenario>
+      <x:scenario label="sub-article-doi-check-2-fail">
+        <x:context href="../tests/rp/sub-article-doi-checks/sub-article-doi-check-2/fail.xml"/>
+        <x:expect-assert id="sub-article-doi-check-2" role="error"/>
+        <x:expect-not-assert id="sub-article-doi-checks-xspec-assert" role="error"/>
+      </x:scenario>
+    </x:scenario>
     <x:scenario label="arxiv-journal-meta-checks">
       <x:scenario label="arxiv-journal-id-pass">
         <x:context href="../tests/rp/arxiv-journal-meta-checks/arxiv-journal-id/pass.xml"/>