How To Fix FF731 - Tax code & may only contain one assignment line

SAP Error Message - Details

• Message type: E = Error

• Message class: FF - FI Function Module Messages

• Message number: 731

• Message text: Tax code & may only contain one assignment line

What causes this issue?

For direct postings to tax accounts, only <DS:GLOS.Steuerkennzeichen>tax
codes</> containing exactly one tax item may be used. Tax codes with
several rates or a nondeductible portion are not allowed here.

System Response

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

How to fix this error?

Use a different tax code.
For direct postings to a tax account, you might have to define a
separate tax code for which only one line with a percentage rate other
than zero is active in percentage rate maintenance. All other lines must
be inactive.
For more information, see SAP Note 869540.
INCLUDE FI_NA_F5

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FF731 - Tax code & may only contain one assignment line ?

  The SAP error message FF731 indicates that there is an issue with the tax code configuration in the system. Specifically, it means that the tax code you are trying to use has more than one assignment line, which is not allowed. This error typically occurs during the posting of financial documents where tax codes are involved.
  Cause:
  
  Multiple Assignments: The tax code in question has been assigned to multiple tax categories or conditions, which is not permissible.
  Configuration Error: There may be a misconfiguration in the tax code settings in the SAP system.
  Data Entry Error: The user may have inadvertently selected a tax code that is not properly configured for the transaction being processed.
  
  Solution:
  
  
  Check Tax Code Configuration:
  
  Go to the transaction code OBYZ (or SPRO -> Financial Accounting -> Financial Accounting Global Settings -> Tax on Sales/Purchases -> Basic Settings -> Check Tax Codes).
  Review the tax code in question and ensure that it has only one assignment line. If there are multiple lines, you will need to consolidate them or create a new tax code that meets the requirements.
  
  
  
  Modify Assignments:
  
  If you find multiple assignments, you can either delete the unnecessary assignments or adjust them to ensure that the tax code complies with the requirement of having only one assignment line.
  
  
  
  Create a New Tax Code:
  
  If the existing tax code cannot be modified due to business requirements, consider creating a new tax code that meets the necessary criteria.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team for specific guidelines on tax code configuration.
  
  
  
  Testing:
  
  After making changes, perform a test transaction to ensure that the error does not occur again.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBYZ for tax code configuration and FB01 for posting documents.
  SAP Notes: Check SAP Notes for any known issues or updates related to tax code configuration.
  User Roles: Ensure that you have the necessary permissions to make changes to tax code configurations in the system.
  Training: Consider training sessions for users involved in financial postings to minimize data entry errors.
  
  By following these steps, you should be able to resolve the FF731 error and ensure that your tax codes are correctly configured for use in SAP.