Solution : https://service.sap.com/sap/support/notes/1248566 (SAP Service marketplace login required)
Key words :
incorrect debit/credit indicator, additional tax code, tax tab page, credit memo, manual tax, tax amount, transaction miro, expense items, base amount, system sets
Related Notes :
| 1344746 | MIR4/MIR7: No tax data displayed |
| 842156 | Miro with tax detail screen SAPLTAX1 451 |