Advanced error management is needed when using paper forms, because nothing guarantees the quality of the filling of the forms by the panelists:
- They may have done corrections (multiple answers).
- They may have forgotten answers.
- The operator may have mixed questionnaires.
However a permanent presence of the operator should not be required. That is why the problems encountered are stored and the scanning report displayed at the end of the form reading process.
This scanning report indicates all problems encountered, together with the identification of the sheet concerned:
- Missing answers.
- Multiple answers: FIZZ indicates the answer taken.
- Sheets not belonging to the questionnaire, and thus not processed.
The operator can then verify the corresponding sheets, do corrections if needed, and scan them again.

