What is the difference between voiding and deleting?
Voiding changes the amount of the bill or payment to zero, but keeps a
record of it in QuickBooks.
Deleting permanently removes the bill or payment. When you delete a bill
that you've already paid, QuickBooks creates a credit with the vendor. If
you delete a payment, the bill (or bills) it was paying will show unpaid balances.
To do this task
Open the Accounts Payable register.
Choose Lists > Chart of Accounts.
Double-click the Accounts Payable account.
Find the bill or payment in the register window.
From the main QuickBooks menu, choose Edit > Void Bill or Void Bill Pmt to void
the transaction, or choose Delete Bill or Delete Bill Pmt to delete the transaction.
Change the amount due on a bill
Change the amount on a bill you already paid
Enter credit from a vendor