As you may know, you can use the Advanced Purchase Order Modification Utility to reload an already processed Purchase Order back into your PO Work Area, where you can modify the order in any way (i.e. add new items to the PO, delete items, or modify/edit existing items).  This is the most common way, but not the only way, to process Change Orders in SpendMap.

But did you know that there is a faster way to add items to your processed Purchase Order?  Just enter a new PO directly into your PO Work Area, as you would any other new PO, and use the same supplier and PO number as the original PO that you want to add to.

When you process the new PO, SpendMap will add a page to the existing (already processed) PO with the new items, and it will increment the PO Revision Number (e.g. PO#1000 will become PO #1000-1 or 1000-A, depending on your settings).

That said, there are additional features and options in the Advanced Purchase Order Modification Utility, so please try both methods to see which one works best for you.

You can learn all about Change Orders, in this section of SpendMap’s Online Help…
– Purchasing (Main Module) > Purchase Orders > Modify a Processed PO (About Change Orders)