How to integrate PO feature in Magento 2 Mobile app?

You can use Magento 2 Purchase Order module to get the purchase order feature in Magento 2. With the use of this module you the admin can create Purchase Orders for the products of the Magento 2 Mobile app.

In the Purchase order for Magento 2 Module, the admin can create quotations, purchase orders and manage incoming shipments.

For any further queries or requirements, you can contact us by creating a ticket.  You can also check all the Magento 2 Extensions for adding new features to your store.