What is the difference between purchase order and sales order?

Purchase order opposite Sales Order .Purchase Order issue from : management of procurement and reqired from production department .Selling Orede issued by: Marketing Division  and  required by the customer.In actions:Purchase Order needs to request materials sales Order needed to support the delivery .

Purchase Order is generally issued by Materials Purchasing Division Head for the purchase of any raw material or consumables required by an industry and Sales Order is generally issued by a Marketing Division Head for the sale of final or say finished goods manufactured by an industry.

Purchase orders are for buying or aquiring things while sales order is for selling or disposing.  

Sales Order being received from third party, Purchase order is being issued to third party

 

Sales Order is issued when a customer buys something from your company while the Purchase Order is issued when the company buys something from the vendor.