How To Fix CA_TTE206 - External Mapping of Tax Code '&1' is not unique (Country &2)

CA_TTE206 - Overview

• Message type: E = Error

• Message class: CA_TTE - TTE Messages

• Message number: 206

• Message text: External Mapping of Tax Code '&1' is not unique (Country &2)

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CA_TTE206 - External Mapping of Tax Code '&1' is not unique (Country &2) ?

  The SAP error message CA_TTE206 indicates that there is an issue with the external mapping of a tax code in the system. Specifically, it means that the tax code you are trying to use is not unique for the specified country. This can occur in scenarios where multiple tax codes are mapped to the same external tax code, leading to ambiguity in tax determination.
  
  Cause:
  
  Duplicate Mapping: The primary cause of this error is that there are multiple entries in the external tax code mapping table for the same tax code and country combination.
  
  Configuration Issues: Incorrect configuration in the tax code mapping settings can lead to this error.
  Data Migration Issues: If data was migrated from another system, it may have resulted in duplicate entries.
  
  
  Solution:
  To resolve the CA_TTE206 error, you can follow these steps:
  
  
  Check External Tax Code Mapping:
  
  Go to the transaction code OB40 (or the relevant transaction for your version) to check the