A purchase order is a demand document issued by a buyer to a supplier, relating to a sale transaction and indicating the products, quantities, and agreed prices for products or services the supplier has to provide to the buyer.

You can view all Purchase Orders on the Purchase Order Listing page.

Check out the video attached below that also explains the process of managing all the purchase orders:-

Steps by Step Process:-

1. Go to Inventory >> Purchase Order.
2. Here you can view all of your purchase orders. Click on the Action button against a purchase order to select options such as Edit, View, Delete or Clone a Purchase Order along with Creating a Goods Receiving Note (GRN) against a Purchase Order (PO). 
3. To create a PO click on the Add Purchase Button on the top right. To know more about creating a Purchase Order, click here
4. You can search a particular PO by selecting parameters from the Search Filter. You can filter on the basis of:

Keyword - Filter invoices on the basis of Purchase Order ID or Supplier. 
Supplier - Select a supplier and view all purchase orders associated with that supplier.
Type - View purchase orders relating to a specific inventory item type 
Status - Filter all invoices according to their status such as pending, in progress, received etc.
From Date - View all purchase orders starting from a particular date
To Date - View all purchase orders till a specific date. 

If you want to view the purchase order of different stores from the main store, you can do that by simply going to the Module Configuration -> Purchase Order and then enable the following trigger.

After the trigger is enabled, you will be able to view the purchase orders from different stores on the purchase order listing page. Please refer to the following image.

The option to View Notes against the created purchase orders is also available where you can simply click on the View Note link and the notes will appear. You can also export the created purchase orders by simply clicking on the Export button at the top right. The data for will be displayed in the excel file.