Solution : https://service.sap.com/sap/support/notes/772344 (SAP Service marketplace login required)
Key words :
calculated tax amount considers, #tax# tab page, tax amount manually, propose final amount, rfopte-xzero reason, external tax system, sap notes related, account line items, account line item, #determine taxes line-
Related Notes :
| 1466572 | FB60: Alternative tax rate not considered |
| 1392122 | MIRO: wrong tax distribution if more then 9 line items |
| 842156 | Miro with tax detail screen SAPLTAX1 451 |
| 689449 | Note 605829: Enhancement to 'Net proposal' |
| 605829 | SAP Note 598301: Supplementation for FI transactions |