Example: a very small label using peel-off option was required for a job. The label height was 25mm. The incorrect label was used for some of the print run. How does the operator know those labels cannot be applied to the product?

An incorrect sized label will be backfed and overstriked because it is still attached to the backing media. The operator will be able to clearly see the label has been overstriked and can remove and destroy any that are incorrect.