Solution : https://service.sap.com/sap/support/notes/583425 (SAP Service marketplace login required)
Key words :
active external tax system, external tax system, error message f5807, calculate tax, implementing note 558288, bset entries, mrko documents, field txgrp, table bset, terms mrko
Related Notes :
| 664567 | Incorrect TXGRP in BSET and undesired summarization |
| 558288 | External tax & taxes by line: Summarization BSET |