How to add a prepayment with an invoice to Sage 300 Accounts Payable


  1. Open Accounts Payable>A/P Transactions>Invoice Entry.
  2. Select the open batch that contains the invoice you are prepaying, or to which you want to add the invoice.
  3. Select the existing invoice that you are prepaying.  If the invoice does not yet exist, enter the invoice information, and then click Add or Save.
  4. Click Prepay.  The Prepayment screen appears.
  5. In the Batch Number field, type the number of the payment batch to which to add the prepayment, or use the Finder to select the batch.  To create a new prepayment batch, click the New button beside the Batch Number field, then enter a description and a date for the batch.
  6. Fill in the remaining fields in the screen, as you would for any prepayment.
  7. Click the Add button to add the prepayment.
    • Note: You can add only one prepayment per invoice.
    • Tip: To cancel a prepayment before you have processed it, click Close without first clicking Add, then click Yes at the message that appears.
  8. Click Close.


If necessary, seek the assistance of Acute Data Systems to help provide assistance with this process.