Solution : https://service.sap.com/sap/support/notes/1147617 (SAP Service marketplace login required)
Key words :
i_dbudat type vdbeki-dbudat activate, customer-specific check, relevant support package, optional import parameter, note 1130933 provided, debit position, posting date, terms fnm1, fvd_loan_post reason, prerequisites previously
Related Notes :
1157558 | BUC: Update FVD_LOAN_POST BAdI to MANST |
1130933 | POS: Customer-specific checks in debit position |