PFS Question: Other Nontaxable Benefits

I have some clarifying question about this question on the PFS:
“Enter your employer contribution to employer sponsored retirement or self-held retirement accounts received in 2021 and the amount estimated for 2022.”

Is the question regarding the contribution my employer made to my 401(l)? The contribution my employer made is reported on my W2, but no guidance is provided on the PFS form regarding where the information could be located.