Solution : https://service.sap.com/sap/support/notes/1519471 (SAP Service marketplace login required)
Key words :
additional selection screen parameter provided, prerequisites program error/enhancements, italy black list declaration, customer/vendor master data, customer/vendor land1, customization table 'tcust_nature_it', 3 digit uic code, solution note version3, customer natural personissue2, table t005_it_uicreg correctly
Related Notes :
1478905 | Model for Countries with privileged tax system (Black list) |