diff --git a/OpenAPI/TS28623_ComDefs.yaml b/OpenAPI/TS28623_ComDefs.yaml
index 42ede46e771aec87abfa07f8df0a69a01585f68d..e8f0a910e7557636aa67f94d8848730f98db4f05 100755
--- a/OpenAPI/TS28623_ComDefs.yaml
+++ b/OpenAPI/TS28623_ComDefs.yaml
@@ -170,17 +170,19 @@ components:
           $ref: '#/components/schemas/Longitude'
         altitude:
           $ref: '#/components/schemas/Float'
-    ConvexGeoPolygon:
+    GeoPolygon:
       type: array
       uniqueItems: true
       items:
         $ref: '#/components/schemas/GeoCoordinate'
-      minItems: 3
+      minItems: 1
     GeoArea:
-      type: object
-      properties:
-        convexGeoPolygon:
-          $ref: '#/components/schemas/ConvexGeoPolygon'
+      oneOf:
+        - type: object
+          properties:
+            geoPolygon:
+              $ref: '#/components/schemas/GeoCoordinate'
+              minItems: 1
     GeoAreaToCellMapping:
       type: object
       properties: