How To Fix >4129 - Tax base amount has incorrect +/- sign

>4129 - Overview

• Message type: E = Error

• Message class: >4 - SAP File Transfer Protocol

• Message number: 129

• Message text: Tax base amount has incorrect +/- sign

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 >4129 - Tax base amount has incorrect +/- sign ?

  The SAP error message "4129 Tax base amount has incorrect +/- sign" typically occurs during the processing of tax-related transactions, such as invoice postings or tax calculations. This error indicates that the system has detected an inconsistency in the sign of the tax base amount, which should be either positive or negative based on the context of the transaction.
  
  Cause:
  
  Incorrect Sign in Tax Base Amount: The tax base amount is expected to have a specific sign (positive or negative) based on the nature of the transaction (e.g., sales vs. purchase). If the sign is incorrect, the system will trigger this error.
  
  Configuration Issues: There may be issues with the tax configuration in the system, such as incorrect settings for tax codes or tax calculation procedures.
  Data Entry Errors: Manual entry errors during invoice creation or posting can lead to incorrect signs being assigned to amounts.
  Custom Code or Enhancements: If there are custom developments