How To Fix /IWBEP/CM_V4_RUNTIME077 - Query option deltatoken has not been processed by the application

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 077

• Message text: Query option deltatoken has not been processed by the application

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME077 - Query option deltatoken has not been processed by the application ?

  The SAP error message /IWBEP/CM_V4_RUNTIME077 indicates that the query option deltatoken has not been processed by the application. This error typically arises in the context of OData services, particularly when dealing with delta queries in SAP Gateway.
  Cause:
  The deltatoken option is used in OData services to manage incremental data retrieval. It allows clients to request only the changes (deltas) that have occurred since the last request. The error occurs when:
  
  The OData service is not configured to handle delta queries.
  The implementation of the OData service does not support the deltatoken option.
  The deltatoken is incorrectly formatted or not provided in the expected manner.
  There may be issues with the underlying data model or the service's ability to track changes.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Service Implementation:
  
  Ensure that the OData service is designed to support delta queries. This involves implementing the necessary logic to handle the deltatoken option in the service's code.
  
  
  
  Review Service Metadata:
  
  Verify the service metadata (usually accessible via the $metadata endpoint) to ensure that the entity sets are configured to support delta queries.
  
  
  
  Update Service:
  
  If the service does not currently support delta queries, you may need to enhance the service implementation to include this functionality. This could involve:
  
  Implementing change tracking in the underlying data model.
  Modifying the service methods to handle the deltatoken parameter.
  
  
  
  
  
  Check for Correct Usage:
  
  Ensure that the client application is correctly using the deltatoken. This includes checking that the token is being sent in the correct format and that it corresponds to a valid state in the service.
  
  
  
  Consult Documentation:
  
  Review SAP documentation related to OData services and delta queries for specific implementation guidelines and best practices.
  
  
  
  Debugging:
  
  If you have access to the backend, consider debugging the service to see how it processes the incoming request and where it fails to handle the deltatoken.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide patches related to this error.
  OData Documentation: Familiarize yourself with the OData protocol and how delta queries are supposed to work. The official OData documentation can provide insights into best practices.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to handle the deltatoken appropriately in your OData service.