How To Fix FF806 - Tax base amount is negative

FF806 - Overview

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 806

• Message text: Tax base amount is negative

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FF806 - Tax base amount is negative ?

  The SAP error message FF806, which states "Tax base amount is negative," typically occurs during the processing of financial transactions, particularly in the context of tax calculations. This error indicates that the system has encountered a negative value for the tax base amount, which is not permissible in the context of tax calculations.
  Causes:
  
  Incorrect Data Entry: A negative amount may have been entered incorrectly in the transaction, leading to a negative tax base.
  Reversals or Adjustments: If a transaction was reversed or adjusted, it might have resulted in a negative tax base.
  
  Configuration Issues: There may be issues with the configuration of tax codes or tax calculation procedures in the system.
  Posting Errors: Errors during the posting of invoices or payments can lead to negative amounts being calculated.
  Custom Code: If there are custom developments or enhancements in the system, they might inadvertently lead to negative tax base amounts.
  
  Solutions:
  
  Review Transaction Data: Check the transaction that