# Recover from a wrong or interrupted scan

Recognise missing zeroes and unfinished input, then recover with a complete new scan.

Source: https://help.smartfact.ai/printbench/guides/recover-a-scan

Audience: Operator

Recognise missing zeroes and unfinished input, then recover with a complete new scan.

## Recover from a wrong or interrupted scan

1. **Start the scanner field**

   Start the scanner field.

   The scan box is ready. Scans go only to the focused box. The practice inputs here are simulated.

2. **Try a value with missing zeroes**

   Try a value with missing zeroes.

   The shorter value does not match. Do not shorten codes or copy this result into the expected value to make it pass.

3. **Scan the complete example value**

   Scan the complete example value.

   Every character matches the selected expected value, including the zeroes. A text match alone does not prove print quality or optical scanning.

4. **Enter only part of a value**

   Enter only part of a value.

   This value has not been finished. Do not treat a partly received value as a complete scan.

5. **Move away from the unfinished scan**

   Move away from the unfinished scan.

   Moving away keeps the partial input marked incomplete. Re-arm the box and scan the whole code again.

6. **Start the scanner field**

   Start the scanner field.

   The scan box is ready. Scans go only to the focused box. The practice inputs here are simulated.

7. **Scan the complete example value**

   Scan the complete example value.

   Every character matches the selected expected value, including the zeroes. A text match alone does not prove print quality or optical scanning.

8. **Stop scanner capture**

   Stop scanner capture.

   The received values stay available for review. Stop capture before using other controls.

[Watch or practise this chapter](https://help.smartfact.ai/printbench/demo?guide=recover-a-scan&chapter=recover-a-scan)

Use real paper measurements and keep useful evidence. This training does not qualify physical equipment.