How To Fix FF800 - Different tax countries are not permitted in one document

FF800 - Overview

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 800

• Message text: Different tax countries are not permitted in one document

What causes this issue?

The document contains tax codes with different reporting countries.
With the "Plants Abroad" functions, only tax codes from one reporting
country should usually be posted.

System Response

If tax codes with different reporting countries are used, the system
issues error message E800 (FF), which states that this is not permitted.

How to fix this error?

When SAP Note 1451436 has been implemented, tax calculations are also
possible in FI for documents with different reporting countries and
different controls for the tax base and the cash discount base. (This is
not yet the case for the invoice verification MIRO in Logistics or for
SD).
It is possible to allow the use of different reporting countries by
setting the error message as a warning message in Customizing or by
deactivating it. You do this in Customizing using transaction SM30,
table V_T100C for message FF 800

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

INCLUDE 'CUSTOMIZED_MESSAGE_INFO' OBJECT DOKU ID TX

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FF800 - Different tax countries are not permitted in one document ?

  The SAP error message "FF800 Different tax countries are not permitted in one document" typically occurs when you are trying to process a financial document (like an invoice or a payment) that includes line items with different tax jurisdictions or countries. This is not allowed in SAP because tax calculations and reporting are often jurisdiction-specific, and mixing different tax countries in a single document can lead to compliance issues.
  
  Cause:
  
  Mixed Tax Jurisdictions: The document contains line items that are assigned to different tax countries or jurisdictions. For example, if one line item is for a service provided in Germany and another is for a service provided in France, this will trigger the error.
  Incorrect Master Data: The master data for the materials or services may not be set up correctly, leading to incorrect tax country assignments.
  
  Configuration Issues: The tax configuration in SAP may not be set up to handle transactions that span