Solution : https://service.sap.com/sap/support/notes/1618135 (SAP Service marketplace login required)
Key words :
prerequisites program error solution, individual billing documents, background billing job, background jobs, table etxdch, terms rv60sbat, external tax, taxware reason, correction instruction, correction introduces
Related Notes :
| 1434921 | MRRL with External Tax: only first document updated |
| 1371977 | Extend Key for Memory of Exernal Tax Interface |
| 1241247 | BAPI does not update External Tax System |
| 1111740 | Refresh complete tax memory |