How to Edit an Item Within a Purchase Order

Goal:

Navigate to Procure → Purchase Orders from the left-hand navigational menu
Locate and select the Purchase Order you would like to edit
Scroll down and select the yellow Revise P.O. button on the right-hand side
Select the button beside the Order Item you would like to edit and select Edit
Within the window that appears, make the appropriate changes and then select the blue Save button
Select the blue Save Purchase Order button in the bottom right-hand corner

In order to successfully complete the steps below, you will require access to the Purchase Orders section within the app.
If you do not see the Revise P.O. button, the Purchase Order is likely closed. If this is the case you will need to select the Reopen P.O. button first
Please note that if the item you are editing is received or partially received, you will be unable to make changes to some of these fields. If this is the case, please see Why am I Unable to Edit the Cost of a Purchase Order Item?
For information on the fields within a Purchase Order, see Detailed Guide to Purchase Order Creation.