BRF391 - The interface of module &1 is not compatible to &2

SAP Error Message - Details

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 391

• Message text: The interface of module &1 is not compatible to &2

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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AnswerBot

• What is the cause and solution for SAP error message BRF391 - The interface of module &1 is not compatible to &2 ?

  The SAP error message BRF391 indicates that there is an incompatibility between the interface of a Business Rule Framework (BRF) module and the expected interface. This typically occurs when there are changes in the module's parameters or when the module is being called with incorrect or outdated parameters.
  Cause:
  
  Parameter Mismatch: The parameters defined in the BRF module do not match the parameters expected by the calling function or application.
  Versioning Issues: If the BRF module has been updated or modified, the calling application may still be using an older version of the module.
  Incorrect Configuration: The configuration settings for the BRF module may not align with the expected input/output parameters.
  Transport Issues: If the module was transported from one system to another, there may be inconsistencies in the module's definition.
  
  Solution:
  
  Check Parameter Definitions: Review the parameter definitions in both the BRF module and the calling application to ensure they match. Make sure that the data types and structures are compatible.
  Update Calling Application: If the BRF module has been updated, ensure that the calling application is also updated to use the new interface.
  Reconfigure the Module: If there are configuration settings that need to be adjusted, do so to ensure compatibility.
  Transport Consistency: If the module was transported, verify that all related objects and dependencies were also transported correctly.
  Testing: After making changes, test the module and the calling application to ensure that the error is resolved.
  
  Related Information:
  
  BRF+ Documentation: Refer to the official SAP documentation for BRF+ for detailed information on module interfaces and parameter definitions.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on resolving BRF391.
  Debugging: Use debugging tools within SAP to trace the execution and identify where the mismatch occurs.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the BRF391 error message.