Add reference on a record to himself

[Gal Katz]

I need to set reference fields in some records so the will refer to themselves but this action is blocked by ServiceNow.
Is there a way I can overcome this and set a reference on a record to himself?   

[Anurag Tripathi]

Yea it makes sense that its blocked, basically if the account_parent is blank that means this is a parent account record.

You should leave it blank and not try to populate it by the same record.

It is the same way on some other records too that have parent child on the same table.