To add a Purchase Order Number to an existing order:
Right-click the order and select Edit Order from the drop-down list. When the Edit Order window is displayed, click the Provisioning tab. The Edit Order/Provisioning tab is displayed.

Right-click in the window and select New. The Add/Edit PON window is displayed.

The following fields are contained in the Add/Edit PON window.
PON
A purchase order number that you specify. It can range from 1 to 50 alphanumeric characters.
Type
The type of purchase order number.
Provider Number
If you have a reference number from the service provider, enter it here.
FOC Date
Date of the Firm Order Confirmation
PCN Date
Date of the Provisioning Completion Notice
BCN Date
Date of the Billing Completion Notice
Service Number
Select the order line items to be associated with this PON.
Order Line Item
This field lists the order line item details.
Make your desired changes/additions to these fields.
Click Select All if more than one order line item is listed and you want to associate one PON to all of the items.
Click Save to save your changes. Click Save again at the Edit Order window.