Header Hierarchy - the system generates the preparer's approval.

Content

Hello, can anyone help me, I created a Header Hierarchy, where:

Action Type = Approval required
Approval Chain Of = Requester
Start With = Requester

But when there is no requester employee created and associated as an employee, the system generates the preparer's approval.

Is this a feature or error in the setup? because the correct thing would be to generate an approval error, because the requester is not created as a user, only as an employee.