This menu option allows reports to be checked for errors. If a report includes faulty code, then this would be shown in the following dialogue:

 

 

If the report layout is correct, then the bullet will be shown in yellow and the error number will read "0". If a report includes an error, then the bullet will be shown in gray and the error code and the error text will be shown accordingly.

 

 

Note: Always correct errors in the report layout, as reports which include errors are not executable!