[PO] PO Item Fields are Grayed Out When Trying to Edit them in PO Purchase Order Entry

When the need arises to edit PO Items and a change order is not needed or wanted, there are times when the ability to do so is restricted. In those instances the fields on the item levels will be grayed out. 

If changes do need to be made to the PO Items, the transactions need to be removed or negated. Or changes can be made via change orders. 

These values can get locked down for a few reasons. They are:
1. A change order has been applied to the PO Item

2. Receipts have been applied to the PO Item

3. Invoices have been applied to the PO Item. 

In the example below, we see that there have been receipts and invoices applied to this PO item.

To check if there have been change orders applied to the PO Items, the PO Change Order Detail report can be run, or the PO Drilldown will have change order info per item as well.