The Customer Prepayment Recurring Transaction Summary form will be opened when recurring customer prepayment transactions. This form will list all the Customer Prepayments created after processing a recurring transaction for all the customer prepayments selected, thus giving you summary on the newly created customer prepayments.
In the PO Number field, the only entry field, enter the PO Number specific to the Customer Prepayment created. There is also an ellipse button to the left of the Customer 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 Customer Prepayment Recurring Transaction Summary form.