How To Fix /IWFND/CM_DESIGNTIME102 - Attribute name '&1' is not unique

/IWFND/CM_DESIGNTIME102 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 102

• Message text: Attribute name '&1' is not unique

Self-Explanatory Message

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/IWFND/CM_DESIGNTIME102 - Details

• The SAP error message /IWFND/CM_DESIGNTIME102 Attribute name '&1' is not unique typically occurs in the context of SAP Gateway and OData services. This error indicates that there are multiple attributes with the same name defined in the data model, which violates the uniqueness requirement for attribute names in OData services.
  
  Cause:
  
  Duplicate Attribute Names: The most common cause of this error is that there are two or more attributes defined with the same name in the same entity type or in related entity types.
  Model Definition Issues: If you are using a CDS (Core Data Services) view or a similar data model definition, there might be overlapping names in the fields defined.
  Inconsistent Metadata: If the metadata of the OData service is not properly defined or has been modified without proper adjustments, it can lead to this error.
  
  
  Solution:
  
  Check Attribute Definitions: Review the entity type definitions in your OData service or CDS view. Ensure that