The purchase order extension adds an extra payment method for Opencart that allows customers on your site to checkout using a PO number. You can restrict access to which users are allowed to checkout by purchase order using customer groups and geozones.
★ Easy to configure and use
★ Allows to set PO number field required or not
★ Support restrict by customer groups and geozones
★ PO number will displayed at email, invoice, and order page
★ Does not overwrite any core files
★ Free installation