Solution : https://service.sap.com/sap/support/notes/85982 (SAP Service marketplace login required)
Key words :
rw interface bset-hwbas, tax line items, rfumsv25 deferred tax, tax base amount, object type 'vbrk', post billing documents, tax line item, billing item, table bset, fi document
Related Notes :
| 166487 | TABLE_INVALID_INDEX in FI/CO interface |
| 87750 | SD FI tax statement lines with too high base amount |
| 36353 | AC interface: Summarizing FI documents |