diff --git a/OpenAPI/TS28105_AiMlNrm.yaml b/OpenAPI/TS28105_AiMlNrm.yaml
index 5e24d900043bc63d68516f06f5aef2b6e30261b8..efdbbf51fc94bda85cac3d573c75b735e224db30 100644
--- a/OpenAPI/TS28105_AiMlNrm.yaml
+++ b/OpenAPI/TS28105_AiMlNrm.yaml
@@ -296,6 +296,9 @@ components:
                       $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
                     mLModelRef:  ## Figure 7.3a.1.1.1-1 is 1-0..1 mapping, hence should be single
                       $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
+                    mLModelCoordinationGroupRef:
+                      $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
+  
 
     MLTrainingReport-Single:
       allOf: