Solution : https://service.sap.com/sap/support/notes/1351171 (SAP Service marketplace login required)
Key words :
pricing function module, standard business transaction, function module external_tax_doc_create_bset, accounting document, accounting interface, message fs870, method store_output_from_calculation, class cl_xtx_document, terms fs 870, store_output_from_calculation reason
Related Notes :
1650953 | Missing update of external tax system for BKPF-GLVOR = SD00 |
1525005 | Create missing entries in ETXDC* tables |
1524351 | Corrections supporting note 1525005 |
1471238 | FI-CA: duplicate tax update to external tax system |
1241247 | BAPI does not update External Tax System |