A customer is linked to an invoice through a product or the bill to. In case of an employee error, you may change the bill to customer on an invoice.
Step 1
From the POS sales terminal, click on the adjust invoice button
Step 2
When prompted, enter in the invoice number.
Step 3
When the invoice comes on the screen, click on the change button under the Billed To: section.
Step 4
Specify the new customer for this invoice by searching existing customers or providing their information. Click on "Save". The customer for this invoice is now changed. If you like, you may print out a new receipt using the Print Receipt button from the screen.