How To Fix /IWBEP/CM_V4_APPS029 - System query option 'expand' is not supported

/IWBEP/CM_V4_APPS029 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_APPS -

• Message number: 029

• Message text: System query option 'expand' is not supported

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_APPS029 - System query option 'expand' is not supported ?

  The SAP error message /IWBEP/CM_V4_APPS029 System query option 'expand' is not supported typically occurs in the context of OData services when a client attempts to use the $expand query option to retrieve related entities in a single request. This error indicates that the OData service you are trying to access does not support the $expand functionality for the specific entity or service you are querying.
  Causes:
  
  Service Configuration: The OData service may not be configured to support the $expand option for the specific entity or navigation property you are trying to access.
  Entity Relationship: The relationship between the entities may not be defined correctly in the service metadata, preventing the use of $expand.
  Version Limitations: The version of the OData service or the underlying SAP system may not support the $expand functionality.
  Service Implementation: The implementation of the OData service may not have been designed to handle $expand requests.
  
  Solutions:
  
  Check Service Metadata: Review the service metadata