How To Fix FKKBIX296 - Interface &1 not allowed in conjunction with interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FKKBIX - Conv.Inv.: Billing (Invoice Preprocessing)

• Message number: 296

• Message text: Interface &1 not allowed in conjunction with interface &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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Smart SAP Assistant

• What is the cause and solution for SAP error message FKKBIX296 - Interface &1 not allowed in conjunction with interface &2 ?

  The SAP error message FKKBIX296 indicates that there is a conflict between two interfaces in the system. Specifically, it states that the interface specified as &1 is not allowed to be used in conjunction with the interface specified as &2. This typically occurs in the context of financial transactions or document processing where certain interfaces are mutually exclusive.
  Cause:
  
  Configuration Issues: The system may be configured in such a way that the two interfaces are not compatible. This could be due to settings in the configuration of the financial modules.
  Business Logic: The business process may dictate that certain interfaces cannot be used together due to the nature of the transactions being processed.
  Custom Development: If there are custom developments or enhancements in the system, they may inadvertently cause conflicts between interfaces.
  
  Solution:
  
  Review Configuration: Check the configuration settings for the financial modules involved. Ensure that the interfaces are set up correctly and that there are no conflicting settings.
  Consult Documentation: Refer to SAP documentation or notes related to the specific interfaces to understand their compatibility and any restrictions.
  Adjust Process Flow: If the business process allows, consider adjusting the process flow to avoid using the conflicting interfaces together.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They may provide insights or patches if this is a known issue.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to look into transaction codes related to financial postings, such as FB01 (Post Document), F-02 (Post Document), or others relevant to your specific scenario.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide guidance on the interfaces involved.
  Testing: If possible, replicate the issue in a test environment to better understand the conditions under which the error occurs.
  
  By following these steps, you should be able to identify the root cause of the FKKBIX296 error and implement a suitable solution.