Solution : https://service.sap.com/sap/support/notes/502066 (SAP Service marketplace login required)
Key words :
type spec ref type dflt optl pass short texti_parking_forbidden type char1, enter amount split data, system issues error message, system issues message, fi enjoy transaction, call transaction se37, add parameter i_parking_forbidden, function module acc_simulated_doc_display, attached program corrections, amount split