How To Fix FF756 - Calculate tax not permitted

FF756 - Overview

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 756

• Message text: Calculate tax not permitted

What causes this issue?

The system tried to calculate taxes although a tax account was posted
to directly. This is not permitted for an item by item tax
determination.

System Response

The posting is rejected.

How to fix this error?

You must do without the automatic tax calculation or inform your system
administrator.

Procedure for System Administrators

Deactivate the item by item tax determination in Customizing for taxes
on sales/purchases.
INCLUDE FI_NA_F5

Error message extract from SAP system. Copyright SAP SE.

FF756 - Details

• The SAP error message FF756 "Calculate tax not permitted" typically occurs in the context of financial transactions, particularly when dealing with tax calculations in the SAP system. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes of Error FF756
  
  
  Tax 
  Configuration Issues: The tax codes or tax calculation procedures may not be properly configured in the system. This can include missing tax codes, incorrect tax rates, or misconfigured tax calculation procedures.
  
  
  Document Type Restrictions: Certain document types may not be allowed to calculate tax. For example, if the document type is set up to be tax-exempt or if it is a specific type of transaction that does not require tax calculation.
  
  
  Master Data Issues: The vendor or customer master data may not have the necessary tax information. For instance, the tax classification might be missing or incorrect.
  
  
  Transaction Type: The type of transaction being processed