Change Inspection Lot System Status

Hello. This forum has been very helpful in the past. Am a novice.

We have a material that wasn't completely set up when the inspection lot was created. An operation 20 needs to be added. Operation 10 exists, but no results recording have taken place yet. Current status is REL CALC SPRQ ORRQ. Since the inspection is released, we can't change the key date. How can we get it back to a state where we can update the key date?