If you receive this query it means the staff member is recorded as having the post of Higher Level Teaching Assistant on their contract but the HLTA status indicator is set to no.
To resolve this query you can either record the HLTA status as yes by going to the staff member's profile, clicking the cog next to personal details:
Make sure to click submit to save.
Alternatively you can amend the contract role identifier by going to the staff profile, clicking the cog next to the contract in question and selecting the role.
However if the information is correct as this is a query you can annotate when uploading the census to Collect.