How To Fix /IWBEP/CM_V4_MED206 - Type '&1' is not a valid EDM type

/IWBEP/CM_V4_MED206 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 206

• Message text: Type '&1' is not a valid EDM type

Self-Explanatory Message

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/IWBEP/CM_V4_MED206 - Details

• The SAP error message /IWBEP/CM_V4_MED206 Type '&1' is not a valid EDM type typically occurs in the context of SAP Gateway and OData services. This error indicates that the system encountered a data type that is not recognized as a valid Entity Data Model (EDM) type when processing an OData request.
  
  Cause:
  
  Invalid Data Type: The error is often caused by the use of a data type in your OData service that is not defined or supported in the EDM. This can happen if you have custom data types or if there is a mismatch between the data type defined in the ABAP backend and what is expected in the OData service.
  Model Definition Issues: If the OData model is not correctly defined or if there are inconsistencies in the metadata, it can lead to this error.
  Changes in Data Model: If there have been recent changes to the underlying data model (like changes