Solution : https://service.sap.com/sap/support/notes/1323179 (SAP Service marketplace login required)
Key words :
software component sap_appl sap application, vat due date function deactivated, inactive vat due date function, activated vat due date functionii, tax reporting date reason, vat due date, manual pre-implement, message class idfii, start transaction se91, classmessage short text130
Related Notes :
| 1038448 | VAT due date: Country specific Reporting + Migration Tool |