diff --git a/docs/HDRUK/2.2.0.md b/docs/HDRUK/2.2.0.md
index 7efede7..8f1b7b2 100644
--- a/docs/HDRUK/2.2.0.md
+++ b/docs/HDRUK/2.2.0.md
@@ -230,6 +230,41 @@ Examples:
    * 10.3399/bjgp17X692645
 
 
+### datasetType
+
+Placeholder for dataset type
+        
+| title      | required   | type        |
+|:-----------|:-----------|:------------|
+| Datasetype | True       | DatasetType |
+
+Examples: 
+   * ['']
+
+
+### datasetSubType
+
+Placeholder for dataset sub-type
+        
+| title      | required   | type        |
+|:-----------|:-----------|:------------|
+| Datasetype | True       | DatasetType |
+
+Examples: 
+   * ['']
+
+
+### populationSize
+
+Summary population size of the cohort
+        
+| title           | required   | type   |
+|:----------------|:-----------|:-------|
+| Population size | True       | int    |
+
+
+
+
 ## documentation
 
 Documentation can include a rich text description of the dataset or links to media such as documents, images, presentations, videos or links to data dictionaries, profiles or dashboards. Organisations are required to confirm that they have permission to distribute any additional media.
diff --git a/docs/HDRUK/2.2.0.structure.json b/docs/HDRUK/2.2.0.structure.json
index 7753296..2f8a7d1 100644
--- a/docs/HDRUK/2.2.0.structure.json
+++ b/docs/HDRUK/2.2.0.structure.json
@@ -202,6 +202,40 @@
                         ],
                         "type": "Doi",
                         "subItems": []
+                  },
+                  {
+                        "name": "datasetType",
+                        "required": true,
+                        "title": "Datasetype",
+                        "description": "Placeholder for dataset type",
+                        "examples": [
+                              [
+                                    ""
+                              ]
+                        ],
+                        "type": "DatasetType",
+                        "subItems": []
+                  },
+                  {
+                        "name": "datasetSubType",
+                        "required": true,
+                        "title": "Datasetype",
+                        "description": "Placeholder for dataset sub-type",
+                        "examples": [
+                              [
+                                    ""
+                              ]
+                        ],
+                        "type": "DatasetType",
+                        "subItems": []
+                  },
+                  {
+                        "name": "populationSize",
+                        "required": true,
+                        "title": "Population size",
+                        "description": "Summary population size of the cohort",
+                        "examples": null,
+                        "type": "int"
                   }
             ]
       },