Custom record is visible in interface but not getting populated when checking in SITE

I am facing a strange issue,

I have created a custom record field, which i'm able to fetch the value in the interface, but while checking the Site the value is not getting populated.

I am using a one to one relationship to fetch the value from the record. I have tried fetching other fields from the same record, even those are getting populated in the interface but not on the site. 

Thanks in Advance!