How To Fix FF855 - Plus/minus sign of tax base different &1 &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 855

• Message text: Plus/minus sign of tax base different &1 &2 &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FF855 - Plus/minus sign of tax base different &1 &2 &3 ?

  The SAP error message FF855 ("Plus/minus sign of tax base different") typically occurs during the processing of financial transactions, particularly when dealing with tax calculations in accounts payable or accounts receivable. This error indicates that there is a discrepancy in the sign of the tax base amount, which can lead to inconsistencies in tax reporting and calculations.
  Cause:
  The error can arise due to several reasons, including:
  
  Incorrect Tax Configuration: The tax codes or tax calculation settings may not be configured correctly in the system.
  Data Entry Errors: Manual entry of amounts in transactions may lead to incorrect signs (positive/negative) being assigned to tax base amounts.
  Inconsistent Document Types: Different document types may have different rules for tax calculations, leading to discrepancies.
  Currency Differences: If transactions involve multiple currencies, conversion issues may lead to sign discrepancies.
  Reversals or Adjustments: If a transaction has been reversed or adjusted incorrectly, it may lead to a mismatch in the expected tax base sign.
  
  Solution:
  To resolve the FF855 error, you can take the following steps:
  
  
  Check Tax Configuration:
  
  Review the tax codes and ensure that they are set up correctly in the system.
  Verify that the tax calculation procedures are correctly defined.
  
  
  
  Review Transaction Data:
  
  Check the specific transaction that triggered the error. Look for any manual entries that may have incorrect signs.
  Ensure that the amounts entered for tax bases are correct and consistent with the expected values.
  
  
  
  Analyze Document Types:
  
  Ensure that the document types used in the transaction are appropriate for the tax treatment being applied.
  
  
  
  Currency Handling:
  
  If the transaction involves multiple currencies, ensure that the currency conversion is handled correctly and that the signs are consistent.
  
  
  
  Reversals and Adjustments:
  
  If the error is related to a reversal or adjustment, review the original and adjusted documents to ensure that the tax base signs are consistent.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes or updates that may address known issues related to this error message.
  
  
  
  Testing:
  
  After making corrections, test the transaction again to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like FB60 (Enter Incoming Invoice), FB70 (Enter Outgoing Invoice), or FBL1N (Vendor Line Item Display) to review and analyze the transactions.
  SAP Documentation: Refer to SAP Help documentation for detailed information on tax configuration and error handling.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the FF855 error and implement the necessary corrections to resolve it.