When trying to check the last step in Build Flows with Flow Builder > Build a Simple Flow > Create or Update a Contact in a DE created today,  I received error id: TFGLNQMC. It advised I post in the developer forums.

When trying to check the last step in Build Flows with Flow Builder > Build a Simple Flow > Create or Update a Contact in a DE created today,  I received error id: TFGLNQMC. It advised I post in the developer forums.