Solution : https://service.sap.com/sap/support/notes/324195 (SAP Service marketplace login required)
Key words :
system issues error messagerw012 'error, additional key words fb60, document type &'&1 = document type, valid reasonf5243 'account type &, document number gap, fi enjoy transaction, structuring reference fields, error message occurs, attached program corrections, -time business partner
Related Notes :
175047 | Causes for FI document number gaps (RF_BELEG) |