Solution : https://service.sap.com/sap/support/notes/1254148 (SAP Service marketplace login required)
Key words :
system issues error ff 810, incorrect debit/credit indicator, credit memo item, attached correction instructions, post manual tax, separate tax code, tax code manually, tax base amount, tax code &1, 0% tax code
Related Notes :
842156 | Miro with tax detail screen SAPLTAX1 451 |