How To Fix /IWFND/CM_DESIGNTIME151 - Relation '&1' does not exist in object model

/IWFND/CM_DESIGNTIME151 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 151

• Message text: Relation '&1' does not exist in object model

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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/IWFND/CM_DESIGNTIME151 - Details

• The SAP error message /IWFND/CM_DESIGNTIME151 Relation '&1' does not exist in object model typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find a specified relation in the object model of the OData service. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Missing Relation Definition: The relation specified in the error message does not exist in the data model of the OData service. This could be due to a missing association or navigation property in the service definition.
  Model Changes: If there have been recent changes to the underlying data model (like changes in the database tables or structures) without updating the OData service, it can lead to this error.
  Service Activation Issues: The OData service may not be properly activated or may not have been regenerated after changes were made to the data model.
  Incorrect Metadata: The metadata of