To access this category, simply click on the "Repair" icon and then "Warranty Reports":

The warranty reports list is displayed in the workspace:

To open a warranty report, simply double click on the desired one.

This warranty report is "invalid".

The categories in red are those containing anomalies or missing information.

Clicking on the arrow opens the desired category.

The anomalies are listed on the left, the fields to be corrected are framed in red.