Magento's Order Management System (OMS) is a versatile and cost-effective system for managing, selling, and fulfilling inventories across all sales channels. OMS creates a consistent customer experience, increasing sales while lowering costs and shortening time to market.
Commercial clients can use a purchase order (PO) to pay for authorised purchases by mentioning the PO number. The company making the transaction authorises and issues the purchase order in advance. The customer selects Purchase Order as the payment method during the checkout process.
After clients place orders, they must first be approved by an administrator before the order status may be modified. From the back end admin panel, you may enable or disable the module. Ability to define rules and criteria for customer order purchasing.
Go to Catalog > Products and choose all of the products whose statuses you want to alter from the drop-down menu. Change the Order Status for selected orders using the Change Status option in the Actions menu.