How to attach documents with Purchase Order?

While creating a Purchase Order, there is an option to upload the document. Click on Upload files.

Option of Uploading Document will show the number of documents attached and if you want to delete the attached document then click on the delete button. After that save the Purchase Order as Approve.

From the listing page of Purchase Order, open an approved Purchase Order in View mode and click on the uploaded document then it will show the attached document. If you want to see the attached document then click on view.