How To Fix FMFG_AAPAY029 - Only vendor items or customer items can be processed at a time

SAP Error Message - Details

• Message type: E = Error

• Message class: FMFG_AAPAY - Payment per Account Assignment

• Message number: 029

• Message text: Only vendor items or customer items can be processed at a time

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FMFG_AAPAY029 - Only vendor items or customer items can be processed at a time ?

  The SAP error message FMFG_AAPAY029 indicates that there is an issue with the processing of items in a financial transaction, specifically that only vendor items or customer items can be processed at a time. This error typically arises in the context of financial accounting or asset accounting when trying to process a payment or transaction that includes both vendor and customer items simultaneously.
  Cause:
  The primary cause of this error is that the system is trying to process a transaction that includes both vendor-related items (accounts payable) and customer-related items (accounts receivable) in a single operation. SAP restricts this to ensure that the accounting entries are clear and that there is no confusion in the financial records.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Separate Transactions: Ensure that you are processing vendor items and customer items in separate transactions. If you have both types of items, split them into two different payment runs or transactions.
  
  
  Review Document Types: Check the document types being used in the transaction. Make sure that the document type corresponds to either vendor or customer transactions, not both.
  
  
  Check for Errors in Input: Review the input data for the transaction. Ensure that you are not inadvertently including both vendor and customer items in the same transaction.
  
  
  Consult Documentation: Refer to SAP documentation or your organization's internal guidelines for handling vendor and customer transactions to ensure compliance with best practices.
  
  
  Contact Support: If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that deal with vendor and customer payments, such as F110 (Automatic Payment Transactions) or F-53 (Post Outgoing Payments).
  Configuration Settings: Review the configuration settings in the Financial Accounting (FI) module to ensure that they are set up correctly for handling vendor and customer transactions.
  User Roles and Permissions: Ensure that the user roles and permissions are correctly set up to allow for the processing of vendor and customer transactions as needed.
  
  By following these steps, you should be able to resolve the error and continue with your financial processing in SAP.