Solution : https://service.sap.com/sap/support/notes/1039539 (SAP Service marketplace login required)
Key words :
siv accounitng keys, attached correction instruction, input vat book, input vat book, output vat book, zip file sivandsiototaxes, selecting transaction = esa2, ese accounting keys, vst accounting key, tax customization change
Related Notes :
| 767548 | Modified Self Invoices for Spain - Real Decree 1496/2003 |
| 520710 | Spain: Self Invoice for intra EU acquisitions |