3653033 - Error "tax number not maintained" for foreign suppliers in 1099-NEC reporting in SAP S/4HANA Cloud Public Edition

• Error message: "Tax number not maintained" appears when generating 1099-NEC forms for foreign suppliers, despite a valid US01 TIN being maintained in the Business Partner master data.
• The issue occurs specifically for foreign suppliers (e.g., Canada-based) performing services in the U.S., while U.S.-based suppliers do not encounter this issue.
• The system does not consider the US01 TIN for 1099-NEC reporting.

• SAP S/4HANA Cloud Public Edition

1. Maintain a US01 TIN for a foreign supplier (e.g., Canada-based) in the Business Partner master data.
2. Attempt to generate the 1099-NEC form for the supplier in the reporting application.
3. Observe the error message: "Tax number not maintained."

• The Business Partner framework does not store the US01 TIN in the STCD1 or STCD2 fields of the LFA1 table for foreign suppliers.
• The system only considers tax numbers stored in the US1 or US2 categories for 1099-NEC reporting.

1. Maintain the tax numbers in the correct categories (US1 or US2) in the Business Partner master data for foreign suppliers. Refer to help document link for details.
2. Note if a supplier only has a TIN but not an SSN, it is still possible to use US1 even though it is only tagged as "SSN".
3. Update the "Output Parameter Determination" app to ensure the role is set to "T1" for US 1099 reports, as forms are generated at the tax number level.
4. Re-test the 1099-NEC report generation to confirm the issue is resolved.

• Refer to: SAP Help Portal - 1099 Reporting
• Refer to: IRS Publication 515 - Withholding of Tax on Nonresident Aliens and Foreign Entities

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