You cannot use the F.13 transaction in SAP to automatically clear downpayments. The F.13 transaction is primarily used for clearing open items in the accounts receivable and accounts payable subledgers, and it doesn’t have specific functionality for clearing downpayments.
To clear downpayments in SAP, you typically use the transaction code F-39 (Post Incoming Payments) for accounts receivable downpayments and F-37 (Clear Customer Down Payment) for customer-specific down payments. For vendor down payments, you use F-48 (Post Vendor Down Payment) and F-54 (Clear Vendor Down Payment).