diff --git a/OpenAPI/TS28623_ComDefs.yaml b/OpenAPI/TS28623_ComDefs.yaml
index 2525e40c2893546a0bdf0f56cf55b32bb20f2b01..a8c57e92ce0c05b3bc9c8e949481fed5df6012d3 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: