Dear.
For this employee position there is no approver maintained in ECC.
R/. Yes. I also have tested in the t.code SE37 using the FM RH_GET_LEADER and get the manager.
What is the method that you are using to get the approver ?
R/ In the t.code PTARQ I tested the button "Determine Approver" and this is the result. I Use the method "Line Manager"
Thanks
Regards