How To Fix FKKBIX320 - Two different billing documents (&1, &2) were transferred

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 320

• Message text: Two different billing documents (&1, &2) were transferred

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FKKBIX320 - Two different billing documents (&1, &2) were transferred ?

  The SAP error message FKKBIX320 indicates that there is a discrepancy in the billing documents being processed. Specifically, it suggests that two different billing documents are being transferred, which is not allowed in the context of the operation being performed. This error typically occurs in the context of billing or invoicing processes, particularly when dealing with financial transactions or document postings.
  Cause:
  
  Duplicate Billing Documents: The system has detected that two billing documents are being referenced simultaneously, which can happen if there is a mistake in the data entry or if the same transaction is being processed multiple times.
  Incorrect Configuration: There may be issues with the configuration of the billing process in the system, leading to conflicts in document handling.
  Data Integrity Issues: There could be inconsistencies in the database or issues with the data being transferred, such as incorrect references or missing information.
  User Error: Users may inadvertently select or input multiple billing documents when only one is expected.
  
  Solution:
  
  Check Document References: Review the billing documents referenced in the error message (&1 and &2) to ensure that they are not being processed together incorrectly. Identify if one of the documents should be excluded from the transaction.
  Review Transaction Logic: Ensure that the logic used to process billing documents is correct and that it adheres to the expected workflow. This may involve checking custom code or configurations.
  Data Validation: Validate the data being transferred to ensure that it is accurate and complete. Look for any discrepancies in the billing document numbers or related data.
  Consult Documentation: Refer to SAP documentation or support notes related to the FKKBIX320 error for specific guidance and troubleshooting steps.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be involved in the billing process, such as VF01 (Create Billing Document), VF02 (Change Billing Document), and VF03 (Display Billing Document).
  SAP Notes: Search for SAP Notes related to FKKBIX320 for any known issues or patches that may address the problem.
  User Roles and Permissions: Ensure that users have the appropriate roles and permissions to perform billing operations, as incorrect permissions can lead to errors.
  Testing: If changes are made to the configuration or data, conduct thorough testing in a development or quality assurance environment before applying changes to the production system.
  
  By following these steps, you should be able to identify the cause of the FKKBIX320 error and implement a solution to resolve it.