How To Fix CA_TTE207 - External Mapping of Tax Type '&1' is not unique (Country &2)

CA_TTE207 - Overview

• Message type: E = Error

• Message class: CA_TTE - TTE Messages

• Message number: 207

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

Self-Explanatory Message

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CA_TTE207 - Details

• The SAP error message CA_TTE207 indicates that there is an issue with the external mapping of a tax type in the system. Specifically, it means that the tax type you are trying to use is not uniquely mapped for the specified country. This can occur in scenarios where multiple mappings exist for the same tax type, leading to ambiguity in tax determination.
  
  Cause:
  
  Duplicate Entries: There are multiple entries in the tax mapping table for the same tax type and country combination.
  Configuration Errors: Incorrect configuration in the tax determination settings or mapping tables.
  Data Migration Issues: If data was migrated from another system, it may have resulted in duplicate mappings.
  
  
  Solution:
  
  
  Check Tax Mapping Configuration:
  
  Go to the transaction code OB40 (or the relevant transaction for your version) to check the tax type mapping.
  Look for entries related to the tax type (&1) and country (&2).
  Ensure that there is only one unique mapping for the specified tax