Log in to ServiceDesk Plus On-Demand using your user name and password.
Click the Purchase tab in the header pane. This displays the list of All POs, by default. If you want to see a PO that is in any other state, then you need to choose corresponding state from the Filter Showing combo box.
From the list of POs, click the PO # of the PO that you wish to edit.
Click Actions button --> Edit Purchase Order. The edit PO form is similar to the create new PO form where you can edit the PO details. Edit the entries and proceed as elaborated in Creating a New Purchase Order section.
Click Save Purchase Order to save the changes and sent the PO for approval to the concerned approvers.
