Solution : https://service.sap.com/sap/support/notes/488809 (SAP Service marketplace login required)
Key words :
terms classic withholding tax, open vendor item, attached source code, withholding tax amount, withholding tax data, incorrect fiscal year, withholding tax, fiscal year, payment currency, written back
Related Notes :
560212 | Incorrect currency reference during withholding tax display |
518414 | Incorrect currency display for withholding tax amount |
431934 | Withholding tax is stored back into the invoice incorrectly |