You will receive this query if a member of staff has a qualified teacher status recorded as yes and is under 21 years of age.
It could be that an error was made when recording either the date of birth or the QTS. To resolve this click the query and this will take you to the staff member's profile. Then click the cog next to the personal details, in this area check the date of birth is correct:
and the QTS has been recorded correctly:
Ensure to click submit after any changes have been made.
Once this has been amended return to the Workforce Census area to recalculate the census.