How To Fix /IWFND/MED303 - The service does not have a Complex Type with name '&1'

/IWFND/MED303 - Overview

• Message type: E = Error

• Message class: /IWFND/MED -

• Message number: 303

• Message text: The service does not have a Complex Type with name '&1'

Self-Explanatory Message

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/IWFND/MED303 - Details

• The SAP error message /IWFND/MED303 The service does not have a Complex Type with name '&1' typically occurs in the context of SAP Gateway services when there is an issue with the OData service definition. This error indicates that the OData service is trying to reference a complex type that is not defined or not available in the service metadata.
  Causes:
  
  Missing Complex Type Definition: The complex type that the service is trying to use is not defined in the service's metadata.
  Incorrect Service Registration: The service may not be properly registered or activated in the SAP Gateway.
  Changes in Data Model: If there have been recent changes to the data model (like adding or removing complex types) without regenerating the service, it can lead to this error.
  Namespace Issues: The complex type might be defined in a different namespace that is not being referenced correctly.
  Transport Issues: If the service was transported from one system