diff --git a/OpenAPI/TS28623_ComDefs.yaml b/OpenAPI/TS28623_ComDefs.yaml
index de0cc05af6743ee62962fa0c06355aaccae76cbc..e0e926b6c94f3381f8ed849084d17eb920411337 100755
--- a/OpenAPI/TS28623_ComDefs.yaml
+++ b/OpenAPI/TS28623_ComDefs.yaml
@@ -78,6 +78,8 @@ components:
           $ref: '#/components/schemas/Latitude'
         longitude:
           $ref: '#/components/schemas/Longitude'
+        altitude:
+          $ref: '#/components/schemas/Float'
     ConvexGeoPolygon:
       type: array
       items: