How To Fix /IWBEP/SBOD144 - Property '&1&2&3' is a key and must not have a complex type

/IWBEP/SBOD144 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 144

• Message text: Property '&1&2&3' is a key and must not have a complex type

Self-Explanatory Message

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/IWBEP/SBOD144 - Details

• The SAP error message /IWBEP/SBOD144 Property '&1&2&3' is a key and must not have a complex type typically occurs in the context of SAP Gateway and OData services. This error indicates that a property defined as a key in your OData model is of a complex type, which is not allowed. In OData, keys must be simple types (like strings, integers, etc.) and cannot be complex types (which can contain multiple properties).
  
  Cause:
  
  Complex Type as Key: The property defined as a key in your OData service is a complex type. OData specifications require that keys be simple types.
  Model Definition Issues: There may be an issue in the way the data model is defined in the ABAP backend or in the service definition.
  Incorrect Annotations: The annotations in the metadata might incorrectly specify a complex type as a key.
  
  
  Solution:
  
  Review the Data Model: Check the data model definition in your ABAP backend. Ensure that