Message type: E = Error
Message class:  SADL_GW_DT_CDS - Messages CDS Checks 
Message number: 016
Message text: Association #TO_COMPOSITION_PARENT in CDS view &1 is missing.
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The SAP error message SADL_GW_DT_CDS016 indicates that there is an issue with an association in a Core Data Services (CDS) view. Specifically, it states that the association #TO_COMPOSITION_PARENT is missing in the specified CDS view. This error typically arises when the CDS view is trying to reference an association that has not been defined or is incorrectly defined. Cause Missing Association: The association #TO_COMPOSITION_PARENT is not defined in the CDS view. Incorrect Association Name: The name of the association might be misspelled or does not match the expected name. Modeling Issues: There may be issues in the underlying data model or the way the associations are structured. Inconsistent Annotations: Annotations related to the association might be missing or incorrectly specified. Solution Define the Association: Ensure that the association #TO_COMPOSITION_PARENT is defined in the CDS view. You can do this by adding the appropriate association definition in the CDS view code. For example: define view Your_CDS_View as select from your_table association
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