Finding a lot alone does not show its container and route links.
Drill record
- Sample lot
- Linked containers
- Route and location
- Block status
Trace both ways
Compare product-to-container and container-to-product records. Block units in the system and verify physical location.
Check subsequent use. Reconcile cleaning, return and next-trip records; log gaps with owner and time.
The drill is complete only when the container flow is explained too.

