PO Change Order
The user opens the PO and clicks on the create Change Order button. This will create a new Change Order document with all the info from the PO. It will issue a change order sequence number. At this point the user makes the necessary changes and then submits the Change Order for approval. The Change Order will have to go thru the same workflow process.
Once the Change Order is approved, it will take a snapshot of the PO and then it will transfer the information from Change Order to the PO.