
Sometimes, the Submitted By field in a document library isn't populated so we are building a flow to check if the field is blank. If it is blank, the flow should automatically populate the field with Created by.
Submitted by field is a People Picker field. The field we can pull up is Submitted by Claims. Don't know what will turn out when the Submitted by Claims field is populated by Created by -- we would expect the Submitted By field is populated with Display name.
It is to use Created by Email available in dynamic content. It displays the creator's name in display name. Not sure why this Created by Email works, instead of Created by Display Name.