If you have the Receiving preference in Company Preferences set to Enter vendor billing information in Point of Sale, vouchers display an Already Paid checkbox to select, this indicates that you previously paid the associated bill.
Selecting the Already Paid on a receiving voucher in Point of Sale requires steps in QuickBooks to complete the transaction properly.
If you select Already Paid on a receiving voucher in Point of Sale and you are using QuickBooks, two entries are created in QuickBooks:
To complete these entries in QuickBooks, verify if a transaction that paid the bill for the Item Receipt has been or has not already been created in QuickBooks. Follow the appropriate steps: