The Vendor Prepayment Recurring Transaction Summary form will be opened when recurring vendor prepayment transactions. This form will list all the Vendor Prepayments created after processing a recurring transaction for all the vendor prepayments selected, thus giving you summary on the newly created vendor prepayments.
In the Invoice Number field, the only entry field, enter the Invoice Number specific to the Vendor Prepayments created. There is also an ellipse button to the left of the Vendor Prepayment ID that when clicked will bring you to the actual transaction.
See Override Transaction Numbers of Recurring Transactions to show you how to use the Vendor Prepayment Recurring Transaction Summary form.