How To Fix 5D436 - Flat-rate taxation and additional tax exemption not allowed

5D436 - Overview

• Message type: E = Error

• Message class: 5D - Error Messages for German Infotype Module Pools

• Message number: 436

• Message text: Flat-rate taxation and additional tax exemption not allowed

What causes this issue?

The contract model uses both a module with flat rate taxation under sec.
40b EStG and a module with an additional tax-exempt quota under sec. 3
no. 63 EStG.
You cannot use both taxation options, however.

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?

Check the modules and change the contract model.

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 5D436 - Flat-rate taxation and additional tax exemption not allowed ?

  The SAP error message 5D436 indicates that flat-rate taxation and additional tax exemption are not allowed in the current context. This error typically arises in scenarios involving tax calculations, particularly when dealing with flat-rate tax schemes and exemptions in the SAP system.
  
  Cause:
  
  
  Configuration Issues: The error may occur due to incorrect configuration in the tax settings. For example, if the system is set up to apply flat-rate taxation but also has additional tax exemptions defined, it can lead to conflicts.
  Document Type Restrictions: Certain document types may not allow for both flat-rate taxation and additional tax exemptions simultaneously.
  Inconsistent Master Data: The master data for customers or vendors may have conflicting tax settings that do not align with the transaction being processed.
  Legal Regulations: In some jurisdictions, the tax laws may not permit the combination of flat-rate taxation with additional exemptions.
  
  
  Solution:
  
  Review Tax Configuration: Check the tax configuration settings in the SAP system. Ensure that