patch https://apis.p2pemanager.com/api/v1/shipments/
This endpoint updates an existing Shipment resource. It allows the KIF user to update the carriers tracking number and the shipping date. This endpoint is designed to allow a KIF to update a shipment's details before it is shipped. It is not designed for a Client to record their receiving of a shipment. That can only be performed on the P2PE Manager GUI.