How To Fix /IWFND/CM_MGW_RT138 - Association set '&1' references to disabled entity type '&2'

/IWFND/CM_MGW_RT138 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 138

• Message text: Association set '&1' references to disabled entity type '&2'

Self-Explanatory Message

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/IWFND/CM_MGW_RT138 - Details

• The SAP error message /IWFND/CM_MGW_RT138 indicates that there is an issue with an association in your OData service. Specifically, it states that the association set references a disabled entity type. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Disabled Entity Type: The entity type referenced in the association set is marked as disabled in the OData service. This can happen if the entity type is not properly defined or has been explicitly disabled in the service configuration.
  Model 
  Configuration Issues: There may be issues in the data model configuration, such as incorrect associations or missing entity types.
  Service Activation: The OData service may not be activated correctly, or there may be inconsistencies in the service metadata.
  
  Solution
  
  
  Check Entity Type Status:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW).
  Open your project and check the entity types defined in your model.
  Ensure that the entity type referenced in the association is enabled. If