diff --git a/guide/release-notes/v3.0.17.adoc b/guide/release-notes/v3.0.17.adoc
index 7e38e4c5..1706ca88 100644
--- a/guide/release-notes/v3.0.17.adoc
+++ b/guide/release-notes/v3.0.17.adoc
@@ -7,5 +7,6 @@ Release date:: May 2024
 
 == Changes to code lists and validation artefacts
 
+* Added new Swedish rule (SE-R-013) for validation of the check number of a Swedish Organization number. The rule is introduced as severity warning. All rules which verifies the format of Organization numbers (SE-R-003, SE-R-004 and SE-R-013) will be changed to severity fatal in next release.
 
 ==  EN 16931 schematrons updated
diff --git a/structure/syntax/part/supplier-party.xml b/structure/syntax/part/supplier-party.xml
index 2412656c..793e4157 100644
--- a/structure/syntax/part/supplier-party.xml
+++ b/structure/syntax/part/supplier-party.xml
@@ -300,6 +300,7 @@
                     <Reference type="RULE">DK-R-014</Reference>
                     <Reference type="RULE">SE-R-003</Reference>
                     <Reference type="RULE">SE-R-004</Reference>
+                    <Reference type="RULE">SE-R-013</Reference>
                     <Attribute usage="Optional">
                         <Term>schemeID</Term>
                         <Name>Seller legal registration identifier identification scheme identifier</Name>