# Handle an unknown unit

Stop when the scanned unit cannot be found, without creating an inspection.

Source: https://help.smartfact.ai/checkstation/guides/checkstation-operator-unknown-unit

Audience: Operator

Operator access is required. The prepared fictional site contains DEMO-00017, not UNKNOWN-00999.

## Handle an unknown unit

1. **Open the inspection station**

   Open the inspection station.

   You are signed in as Sam, with operator access only. The fictional site has a separately approved bracket inspection plan.

2. **Choose your physical station**

   Choose your physical station.

   Choose Inspection bench 1, where you are doing the work.

3. **Take control of the station**

   Take control of the station.

   Acquire the named station before starting an inspection. This does not start a unit.

4. **Focus the unit scanner field**

   Focus the unit scanner field.

   Scan the unit in front of you. This demonstration enters a fictional barcode through the same keyboard scanner field.

5. **Scan an unregistered unit**

   Scan an unregistered unit.

   Check the code and ask a supervisor to review the approved source data. An unknown scan never invents a unit.

[Watch or practise this chapter](https://help.smartfact.ai/checkstation/demo?guide=checkstation-operator-unknown-unit&chapter=unknown-unit)

Keep the physical unit identified and ask for the source record to be checked. Do not substitute another unit code.