How To Fix M8_2802 - Invoice reduction with different tax information is not allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: M8_2 - Logistics Invoice Verification

• Message number: 802

• Message text: Invoice reduction with different tax information is not allowed.

What causes this issue?

If you reduce an invoice item manually, the tax information must be the
same on multiple account assignment (for example tax code, tax country,
tax jurisdiction code).

System Response

Posting of the invoice is not allowed.

How to fix this error?

Ensure that the tax information on account assignment level is the same.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8_2802 - Invoice reduction with different tax information is not allowed. ?

  The SAP error message M8_2802, which states "Invoice reduction with different tax information is not allowed," typically occurs during the processing of an invoice reduction or credit memo in the SAP system. This error indicates that there is a mismatch in the tax information between the original invoice and the reduction or credit memo being processed.
  Cause:
  
  Tax Code Mismatch: The tax code used in the original invoice does not match the tax code used in the credit memo or invoice reduction.
  Different Tax Rates: The tax rates applied in the original invoice and the credit memo are different, which is not allowed in SAP.
  Tax Jurisdiction Issues: If the tax jurisdiction has changed between the original invoice and the credit memo, this can lead to discrepancies.
  Configuration Issues: There may be configuration settings in the tax calculation that are causing the mismatch.
  
  Solution:
  
  Verify Tax Codes: Check the tax codes used in both the original invoice and the credit memo. Ensure they are the same.
  Check Tax Rates: Ensure that the tax rates applied in both documents are identical. If they differ, adjust the credit memo to match the original invoice.
  Review Tax Jurisdictions: If applicable, verify that the tax jurisdictions are the same for both documents.
  Adjust Configuration: If the issue persists, review the tax configuration settings in SAP to ensure they are set up correctly.
  Consult Documentation: Refer to SAP documentation or consult with your SAP support team for specific configuration settings related to tax handling.
  
  Related Information:
  
  Transaction Codes: You may be using transaction codes like MIRO (Invoice Verification) or FB60 (Enter Incoming Invoice) when encountering this error.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  User Exits and BAdIs: If custom logic is implemented in your SAP system, review any user exits or BAdIs that may affect tax calculations.
  Testing: After making adjustments, perform tests to ensure that the error does not reoccur and that the invoice reduction processes correctly.
  
  If the problem continues after following these steps, it may be beneficial to engage with your SAP support team or a consultant who specializes in SAP finance and tax processes.