diff --git a/framework/json/responses/sections/beaconFilteringTermsResults.json b/framework/json/responses/sections/beaconFilteringTermsResults.json
index e7a0ab74a..f283dfaf7 100644
--- a/framework/json/responses/sections/beaconFilteringTermsResults.json
+++ b/framework/json/responses/sections/beaconFilteringTermsResults.json
@@ -21,12 +21,14 @@
                     ],
                     "type": "string"
                 },
-                "type": {
-                    "description": "Either \"custom\", \"alphanumeric\" or ontology/terminology full name. TODO: An ontology ... with a registered prefix does not need a full name so one may better use CURIE to indicate that the resource can be retrieved from the id. This also will allow to provide an enum here.",
-                    "examples": [
-                        "Human Phenotype Ontology",
-                        "alphanumeric"
+                "type":{
+                    "description": "Either \"custom\", \"alphanumeric\" or \"ontology\" .",
+                    "enum": [
+                        "custom",
+                        "alphanumeric",
+                        "ontology"
                     ],
+                    "example": "alphanumeric",
                     "type": "string"
                 }
             },
diff --git a/framework/src/responses/sections/beaconFilteringTermsResults.yaml b/framework/src/responses/sections/beaconFilteringTermsResults.yaml
index 4c3bd96c3..319e8c231 100644
--- a/framework/src/responses/sections/beaconFilteringTermsResults.yaml
+++ b/framework/src/responses/sections/beaconFilteringTermsResults.yaml
@@ -23,13 +23,12 @@ definitions:
       type:
         type: string
         description: >-
-          Either "custom", "alphanumeric" or ontology/terminology full name.
-          TODO: An ontology ... with a registered prefix does not need a full name
-          so one may better use CURIE to indicate that the resource can be retrieved
-          from the id. This also will allow to provide an enum here.
-        examples: 
-          - "Human Phenotype Ontology"
+          Either "custom", "alphanumeric" or "ontology" .
+        enum:
+          - custom
           - alphanumeric
+          - ontology
+        example: alphanumeric
       id:
         description: >-
           The field id in the case of numeric or alphanumeric fields, or