A support ‘Payment Request’ indicates the total cost of the expense, your share of the cost (if any) and the payer co-parent’s share of the expense to be reimbursed to you and any receipts that you wish to attach.
Payment terms usually specify the period of time that a payer co-parent has to reimburse the payment to the payee co-parent so that the payee can meet credit card or other payment due dates.