Daily all of us make purchases for various types of items, such as groceries, service goods, or might be a bag or new shoes from an online store. For all of the products the supplier gives a payment slip or has to generate a PO. The receipt and payment slip are proof of the order and also that it has been delivered to the recipient.
At the start of a business transaction, a purchase order is issued, that states the buyers' demand in regards to products - quantities and price. The document becomes legally binding when it is approved by the seller.
The seller sends an invoice once the order is approved. An invoice contains the terms agreed upon in the purchase order, such as price, reference number, terms of payment, shipment address, date, etc.
In a scenario in which the employer controls when, where, and how the work is completed and gives financial assets and reimbursement, then the worker is an employee.
The purchase order number is unique and generated only once the order is placed and then assigned to the form. In general, once an invoice is made, the software will automatically generate the referenced number. It later helps the seller when sending the invoice. Also, if there is an issue with the transaction the buyer can benefit from this unique number to quickly find the placed order.