Solution : https://service.sap.com/sap/support/notes/652743 (SAP Service marketplace login required)
Key words :
mod groups/functions tab, withholding information w-4/w-5, field p0210-amtex, irs limits indicator, field q0210-irsli, irs mandates indicator, 'irs mandates' indicator, tax authority permits, exempt indicator field, field p0210-exind
Related Notes :
638129 | IT0210: Allow screen fields to be display only |
619163 | ITY: Minor enhancements in U.S. Tax infotype handling |
521204 | Q&A: Master Note for U.S. Master Data |