Solution : https://service.sap.com/sap/support/notes/750011 (SAP Service marketplace login required)
Key words :
system issues error f5060, account line items, debit/credit indicator, tax amount manually, manual tax reason, determine taxes line-, manual tax amount, attached program corrections, terms xtxit, ttxd-xtxit
Related Notes :
851545 | Distributing manually entered tax amount to tax line items |
798372 | Manually entering tax for jurisdiction codes line by line |
605829 | SAP Note 598301: Supplementation for FI transactions |