Message type: E = Error
Message class:  BUPA_TAX - Messages for Business Partner Tax Numbers 
Message number: 204
Message text: Tax numbers of the same category cannot be combined: &1 &2
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The SAP error message BUPA_TAX204 indicates that there is an issue with tax numbers of the same category being combined for a business partner. This typically occurs when you are trying to assign multiple tax numbers of the same type (e.g., VAT, sales tax) to a single business partner, which is not allowed in the system.
Cause: The error arises when: You attempt to assign multiple tax numbers of the same category (e.g., multiple VAT numbers) to a single business partner. The system has a restriction that prevents the combination of tax numbers of the same type for a single entity.
Solution: To resolve this error, you can take the following steps: Review Tax Numbers: Check the tax numbers that you are trying to assign to the business partner. Ensure that you are not trying to assign multiple tax numbers of the same category. Remove Duplicate Tax Numbers: If you find that there are duplicate tax numbers of
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