How To Fix /IWFND/CM_MGW208 - Filter parameter '&1' is not supported

/IWFND/CM_MGW208 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 208

• Message text: Filter parameter '&1' is not supported

Self-Explanatory Message

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/IWFND/CM_MGW208 - Details

• The SAP error message /IWFND/CM_MGW208 Filter parameter '&1' is not supported typically occurs in the context of OData services when a filter parameter that is being used in a request is not recognized or supported by the service. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  
  Unsupported Filter Parameter: The filter parameter specified in the request is not defined in the OData service's metadata. This could be due to a typo or because the parameter is not exposed by the service.
  
  
  Service Versioning: The OData service might have been updated, and the filter parameter was removed or changed in a newer version.
  
  
  Incorrect OData Query: The OData query might be incorrectly formed, leading to the service not recognizing the filter parameter.
  
  
  Data Model Changes: Changes in the underlying data model (like changes in the database or data structure) that are not reflected in the OData service.
  
  
  Solutions:
  
  
  Check