How To Fix /IWFND/CM_MGW_RT147 - Association set '&1' has no proper entity sets assigned

/IWFND/CM_MGW_RT147 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 147

• Message text: Association set '&1' has no proper entity sets assigned

Self-Explanatory Message

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/IWFND/CM_MGW_RT147 - Details

• The SAP error message /IWFND/CM_MGW_RT147 indicates that there is an issue with the association set in your OData service. Specifically, it means that the association set defined in your service does not have any proper entity sets assigned to it. This can occur in the context of SAP Gateway services when the metadata definition is not correctly configured.
  
  Cause:
  
  Missing Entity Sets: The association set is defined in the service but does not have any entity sets associated with it.
  Incorrect Metadata Configuration: The metadata (e.g., the service definition in the Data Model) may not be correctly set up, leading to this error.
  Model Changes: If there have been recent changes to the data model (like adding or removing entity sets or associations) without updating the service, this error can occur.
  Service Activation Issues: The OData service may not be properly activated or may have inconsistencies in its configuration.
  
  
  Solution:
  
  
  Check the Data Model:
  
  Go to the Data