diff --git a/validation/validation_conf_12052023.py b/validation/validation_conf_12052023.py
index 74c3a54..6c60db0 100644
--- a/validation/validation_conf_12052023.py
+++ b/validation/validation_conf_12052023.py
@@ -82,7 +82,8 @@ STRAIN_FIELDS = [
     {
         FIELD: "otherCollectionNumbers",
          VALIDATION: [
-            {TYPE: REGEXP, MATCH: "([^ ]* [^ ]*)(; [^ ]* [^ ]*)*$", ERROR_CODE: "STD63"},
+            {TYPE: REGEXP, MATCH: "([^ ]* [^ ]*)(; [^ ]* [^ ]*)*$", ERROR_CODE: "STD63",
+             MULTIPLE: True, SEPARATOR: ';'},
              #{TYPE: CROSSREF, CROSSREF_NAME: "Strains", ERROR_CODE: "STD64"},
         ]
     },
@@ -322,7 +323,7 @@ STRAIN_FIELDS = [
     {
         FIELD: "plasmidCollections",
          VALIDATION: [
-            {TYPE: REGEXP, MATCH: "([a-zA-Z .'-]+)\(([a-zA-Z .'-]+) (\d+)\)(; ([a-zA-Z .'-]+)\(([a-zA-Z .'-]+) (\d+)\))*$",
+            {TYPE: REGEXP, MATCH: "([a-zA-Z .'-]+)\(([a-zA-Z .'-]+) (\d+)\)(;([a-zA-Z .'-]+)\(([a-zA-Z .'-]+) (\d+)\))*$",
              ERROR_CODE: "STD62"}
          ]
     },
@@ -357,7 +358,7 @@ STRAIN_FIELDS = [
     {
         FIELD: "sequenceLiterature",
         VALIDATION: [
-             {TYPE: REGEXP, MATCH: "^\d+(; \d+)*$", ERROR_CODE: "STD61"},
+             {TYPE: REGEXP, MATCH: "^\d+(;?\s*\d+)*$", ERROR_CODE: "STD61"},
         ]
 
     },
@@ -485,10 +486,7 @@ SHEETS_SCHEMA = {
         "acronym": "STD",
         'id_field': 'accessionNumber',
         VALIDATION: {TYPE: MANDATORY, ERROR_CODE: "EFS05"},
-        ROW_VALIDATION: [
-            #{TYPE: NAGOYA, ERROR_CODE: "STD46"},
-            {TYPE: NAGOYA1, ERROR_CODE: "STD64"}
-        ],
+        ROW_VALIDATION: [],
         COLUMNS: STRAIN_FIELDS,
     },
     LITERATURE_SHEET: {