diff --git a/hdr_schemata/models/GWDM/2.0/schema.json b/hdr_schemata/models/GWDM/2.0/schema.json
index 809db11..c7d624a 100644
--- a/hdr_schemata/models/GWDM/2.0/schema.json
+++ b/hdr_schemata/models/GWDM/2.0/schema.json
@@ -570,19 +570,6 @@
                   "title": "DatasetLinkage",
                   "type": "object"
             },
-            "DatasetType": {
-                  "anyOf": [
-                        {
-                              "maxLength": 100,
-                              "minLength": 2,
-                              "type": "string"
-                        },
-                        {
-                              "type": "null"
-                        }
-                  ],
-                  "title": "DatasetType"
-            },
             "DeliveryLeadTimeV2": {
                   "enum": [
                         "Less than 1 week",
@@ -1585,7 +1572,7 @@
                         "datasetType": {
                               "anyOf": [
                                     {
-                                          "$ref": "#/$defs/DatasetType"
+                                          "$ref": "#/$defs/CommaSeparatedValues"
                                     },
                                     {
                                           "type": "null"
@@ -1640,7 +1627,7 @@
                         "datasetSubType": {
                               "anyOf": [
                                     {
-                                          "$ref": "#/$defs/DatasetType"
+                                          "$ref": "#/$defs/CommaSeparatedValues"
                                     },
                                     {
                                           "type": "null"
diff --git a/hdr_schemata/models/GWDM/v2_0/Summary.py b/hdr_schemata/models/GWDM/v2_0/Summary.py
index 8d3e880..983e35c 100644
--- a/hdr_schemata/models/GWDM/v2_0/Summary.py
+++ b/hdr_schemata/models/GWDM/v2_0/Summary.py
@@ -31,7 +31,7 @@ class Summary(BaseModel):
 
     contactPoint: Optional[EmailStr] = Field(None, **an.contactPoint.__dict__)
 
-    datasetType: Optional[DatasetType] = Field(None, **an.datasetType.__dict__)
+    datasetType: Optional[CommaSeparatedValues] = Field(None, **an.datasetType.__dict__)
 
     description: Optional[LongDescription] = Field(None, **an.description.__dict__)
 
@@ -43,8 +43,8 @@ class Summary(BaseModel):
 
     populationSize: Optional[int] = Field(None, **an.populationSize.__dict__)
 
-    datasetSubType: Optional[DatasetType] = Field(None, **an.datasetSubType.__dict__)
+    datasetSubType: Optional[CommaSeparatedValues] = Field(
+        None, **an.datasetSubType.__dict__
+    )
 
     inPipeline: Optional[Pipeline] = Field("Not available", **an.inPipeline.__dict__)
-
-