diff --git a/src/main/kotlin/com/jetbrains/snakecharm/codeInsight/SnakemakeAPI.kt b/src/main/kotlin/com/jetbrains/snakecharm/codeInsight/SnakemakeAPI.kt
index a5280eb8..b9d006a3 100644
--- a/src/main/kotlin/com/jetbrains/snakecharm/codeInsight/SnakemakeAPI.kt
+++ b/src/main/kotlin/com/jetbrains/snakecharm/codeInsight/SnakemakeAPI.kt
@@ -455,18 +455,25 @@ class SnakemakeAPIProjectService(val project: Project): Disposable {
                     }
                     contextTypeAndSubsection2LambdaArgs.put(ctxAndName, value)
                 }
+            }
 
-                // functions
-                val funcIntroductionsByFqn = apiProvider.getFunctionIntroductionsByFqn(smkLangVers)
-                funcIntroductionsByFqn.forEach { (fqn, versAndParams) ->
-                    val (_, params) = versAndParams
+            // functions
+            val funcIntroductionsByFqn = apiProvider.getFunctionIntroductionsByFqn(smkLangVers)
+            funcIntroductionsByFqn.forEach { (fqn, versAndParams) ->
+                val (_, params) = versAndParams
 
-                    if (params.isPlaceholderInjectionAllowed) {
-                        funFqnValidForInjection.add(fqn)
+                if (params.limitToSections.isNotEmpty()) {
+                    val value = params.limitToSections.toTypedArray()
+                    require(value.isNotEmpty()) {
+                        "YAML format error: 'limitToSections' should not be empty for function '${fqn}'."
                     }
+                    funFqnToSectionRestrictionList.put(fqn, value)
+                }
+
+                if (params.isPlaceholderInjectionAllowed) {
+                    funFqnValidForInjection.add(fqn)
                 }
             }
-            funFqnToSectionRestrictionList
 
             SnakemakeAPIProjectState(
                 contextType2SingleArgSectionKeywords = contextType2SingleArgSectionKeywords.toImmutableMap(),
diff --git a/src/main/kotlin/com/jetbrains/snakecharm/framework/snakemakeAPIAnnotations/SmkAPIAnnParams.kt b/src/main/kotlin/com/jetbrains/snakecharm/framework/snakemakeAPIAnnotations/SmkAPIAnnParams.kt
index b5a2362a..2a2032a5 100644
--- a/src/main/kotlin/com/jetbrains/snakecharm/framework/snakemakeAPIAnnotations/SmkAPIAnnParams.kt
+++ b/src/main/kotlin/com/jetbrains/snakecharm/framework/snakemakeAPIAnnotations/SmkAPIAnnParams.kt
@@ -15,6 +15,7 @@ data class SmkKeywordDeprecationParams(
 }
 
 data class SmkKeywordIntroductionParams(
+    //val name: String,
     val lambdaArgs: List<String>,
     val keywordArgsAllowed: Boolean,
     val multipleArgsAllowed: Boolean,
@@ -27,6 +28,7 @@ data class SmkKeywordIntroductionParams(
 ) {
     companion object {
         fun createFrom(rec: SmkAPIAnnParsingIntroductionRecord) = SmkKeywordIntroductionParams(
+            //name = rec.name,
             lambdaArgs = rec.lambda_args,
             limitToSections = rec.limit_to_sections,
             keywordArgsAllowed = rec.keyword_args_allowed,
diff --git a/src/test/resources/features/completion/keywords_completion.feature b/src/test/resources/features/completion/keywords_completion.feature
index c764b206..ab24960e 100644
--- a/src/test/resources/features/completion/keywords_completion.feature
+++ b/src/test/resources/features/completion/keywords_completion.feature
@@ -378,7 +378,7 @@ Feature: Completion for snakemake keyword-like things
       | rule_like  | rule_like_removed | lang_version | expected_item   | expected_item_type              | missing_item | deprecated_key | removed_key | introduced_key |
       | rule       | rule              | 1.0.0        | input           | deprecated 1.0.0, removed 2.0.0 | output       | input          | output      | log            |
       | rule       | checkpoint        | 1.0.0        | output          |                                 | xxx          | input          | output      | log            |
-      | rule       | module            | 1.0.0        | output          |                                 | xxx          | input          | output      | log            |
+      | rule       | module            | 1.0.0        | input          |         deprecated 1.0.0, removed 2.0.0                        | output          | input          | output      | log            |
       | checkpoint | checkpoint        | 1.0.0        | input           | deprecated 1.0.0, removed 2.0.0 | output       | input          | output      | log            |
       | rule       | rule              | 2.0.0        | log             | >=2.0.0                         | input        | input          | output      | log            |
       | rule       | rule              | 1.0.0        | threads         | >=0.0.1, deprecated 2.0.0       | xxx          | input          | output      | log            |