How To Fix /BOBF/COM_GEN_FRAME400 - Impermissable change of request type &1 by request interpreter

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/COM_GEN_FRAME -

• Message number: 400

• Message text: Impermissable change of request type &1 by request interpreter

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /BOBF/COM_GEN_FRAME400 - Impermissable change of request type &1 by request interpreter ?

  The SAP error message /BOBF/COM_GEN_FRAME400 indicates that there is an impermissible change of request type by the request interpreter in the Business Object Framework (BOBF). This typically occurs when there is an inconsistency in the request handling or when the request type is not allowed to be changed during the processing of a request.
  Cause:
  
  Request Type Mismatch: The error often arises when there is an attempt to change the request type (e.g., from a create request to an update request) in a way that is not permitted by the business logic defined in the BOBF.
  Incorrect Configuration: The configuration of the business object may not allow for the type of request being made, leading to this error.
  Programming Logic: Custom code or enhancements that manipulate the request types incorrectly can also trigger this error.
  
  Solution:
  
  Check Request Type: Review the logic in your application to ensure that the request type is being set correctly and is consistent with the expected operations (create, update, delete).
  Review BOBF Configuration: Ensure that the BOBF configuration for the business object allows for the operations you are trying to perform. This includes checking the definitions of the request types and their allowed transitions.
  Debugging: If you have access to the ABAP code, use debugging tools to trace the execution flow and identify where the request type is being changed improperly.
  Consult Documentation: Refer to the SAP documentation for BOBF to understand the constraints and rules regarding request types and their transitions.
  Error Handling: Implement proper error handling in your code to manage situations where an impermissible change might occur, providing meaningful feedback to the user or logging the issue for further analysis.
  
  Related Information:
  
  BOBF Documentation: SAP provides extensive documentation on the Business Object Framework, which can be helpful in understanding the architecture and constraints.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  Community Forums: Engage with the SAP community through forums or SAP Community Network (SCN) to see if others have encountered and resolved similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.