Solution : https://service.sap.com/sap/support/notes/496208 (SAP Service marketplace login required)
Key words :
withholding tax liability reason, system issues message 'vendor, terms classic withholding tax, classic withholding tax, maintain view v_t100c, application area f5, withholding tax exemption, enjoy transactions fb60, user-defined message, withholding tax
Related Notes :
532253 | Message for withholding tax exemption not in background mode |
482228 | Message for withholding tax exemption not displayed |
369330 | Warning: customer/vendor subject to w/tax version 2 |