How To Fix FMPP1066 - Internal error: Remaining amount falls below total invoice amount

SAP Error Message - Details

• Message type: E = Error

• Message class: FMPP1 - Partial Payment by Fund: Messages

• Message number: 066

• Message text: Internal error: Remaining amount falls below total invoice amount

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 FMPP1066 - Internal error: Remaining amount falls below total invoice amount ?

  The SAP error message FMPP1066, which states "Internal error: Remaining amount falls below total invoice amount," typically occurs in the context of invoice processing, particularly when dealing with financial documents such as invoices, credit memos, or payment processing. This error indicates that there is a discrepancy between the amounts being processed and the expected amounts in the system.
  Causes:
  
  Data Entry Errors: Incorrect amounts may have been entered in the invoice or payment documents.
  Incomplete Document Processing: If an invoice or payment has not been fully processed or has been partially reversed, it may lead to inconsistencies in the amounts.
  Configuration Issues: There may be issues with the configuration of the financial modules in SAP, leading to incorrect calculations or validations.
  System Bugs: Occasionally, internal errors can arise from bugs in the SAP system or issues with the underlying database.
  
  Solutions:
  
  Verify Amounts: Check the amounts entered in the invoice and ensure they match the expected values. Look for any discrepancies in the total invoice amount and the remaining amount.
  Review Document Flow: Examine the document flow for the invoice or payment. Ensure that all related documents (e.g., credit memos, adjustments) are correctly processed and accounted for.
  Check for Open Items: Use transaction codes like FBL1N (Vendor Line Item Display) or FBL3N (G/L Account Line Item Display) to check for any open items that may be affecting the invoice processing.
  Reprocess the Document: If the document is in an inconsistent state, consider reversing and re-entering the invoice or payment to ensure that all amounts are correctly processed.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error. There may be known issues with specific versions of SAP that have been resolved in later updates.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, it may be necessary to contact SAP Support for further assistance. Provide them with detailed information about the error, including transaction codes, document numbers, and any relevant screenshots.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB60 (Enter Incoming Invoices), FB70 (Enter Outgoing Invoices), and FBL1N/FBL3N for line item displays.
  SAP Documentation: Review SAP documentation related to invoice processing and error handling for additional insights.
  User Forums: Engage with SAP user communities or forums where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the FMPP1066 error and implement a solution to resolve it.