3736884 - Error message: 'Tax code 1 is not valid'.

While maintaining the Switzerland tax number under category CH1 in supplier data, the system displays the error message 'Tax Code 1 is not valid'.

SAP S/4HANA Cloud Public Edition

1. Open the Manage Supplier Master Data app.
2. Select a supplier with country Switzerland.
3. In Tax Numbers, choose tax category CH1.
4. Enter the Swiss tax/UID number and save.
5. Observe the error 'Tax code 1 is not valid'.

The CH1 tax category is not intended for maintaining TIN tax numbers. Attempting to use CH1 for this purpose triggers a validation check, resulting in the error.

To maintain Switzerland TIN tax numbers, create a custom tax category as per business requirements using the following configuration activities:

• Define Tax Number Categories (SSCUI ID: 104758)
• Maintain Tax Number Categories (SSCUI ID: 102415)

Refer to the SAP Help Portal documentation Define Tax Number Categories for detailed guidance on the configuration.

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