Situation
A warehouse management system introduces mobile scanning and offline picking for a regulated-material warehouse.
Intended Use
Verify material and location, enforce approved inventory status, record movement, and reconcile transactions to ERP.
Decision Summary
| Decision element | Case record |
|---|---|
| GxP assessment | Material identity, status, location, authorization, and transaction history support prevention of unintended use. |
| Potential impact | Unapproved material can enter production or inventory records can misrepresent location and status. |
| Known issue | The fictional offline client permits a pick using a status cached before Quality rejection. |
| Validation conclusion | Offline picking is disabled for controlled materials until fail-closed status and reconnect reconciliation pass. |
GxP Assessment
Material identity, status, location, authorization, and transaction history support prevention of unintended use.
Affected GxP Functions
- Material and location scan
- Quarantine and release status
- Offline transaction control
- ERP synchronization
- Inventory audit history
Failure Scenarios
- Rejected material can be picked
- Stale offline status permits movement
- Duplicate synchronization changes quantity
- Wrong location is recorded
- Unreconciled transaction remains hidden
Potential Impact
Unapproved material can enter production or inventory records can misrepresent location and status.
Existing Controls
- Physical segregation
- Barcode identity
- ERP status authority
- Role restrictions
- Cycle count and reconciliation
Existing Evidence
- Scanner qualification
- ERP validation
- Supplier mobile-client tests
- Approved status mapping
Evidence Gaps
- Offline cache duration
- Reconnect order
- Duplicate prevention
- Lost-device access
Testing Approach
- Script released, quarantined, rejected, and expired statuses
- Challenge offline stale status and lost connection
- Test duplicate, delayed, and failed synchronization
- Verify reconciliation, audit history, access removal, and physical control interaction
Deviations or Known Issues
The fictional offline client permits a pick using a status cached before Quality rejection.
Validation Conclusion
Offline picking is disabled for controlled materials until fail-closed status and reconnect reconciliation pass.
Reassessment Criteria
- Mobile-client update
- Offline rule change
- ERP status or interface change
- Warehouse process change
- Material-status deviation