Solution : https://service.sap.com/sap/support/notes/1137492 (SAP Service marketplace login required)
Key words :
tax reporting date, document change rules, reporting date, posted document, document originates, bkpf-vatdate, required customizing, exchange rate, t001-txkrs = 5, invoice verification
Related Notes :
| 1441194 | VATDATE in FB02 cannot be changed due to BSET-STMDT |
| 1232484 | How to use the VAT due date, tax reporting date VATDATE |
| 1147151 | FF 786 although tax reporting date cannot be entered |
| 1023317 | Legal Change: Vat Due date |