an approver have different ledger assignment at employee level?

We have two levels of approval

Up to 10 K EUR the Invoice approver is example as "X" and Employee assignment level "Ledger1" assigned and we are receiving AP Invoice approval notifications as Invoice belongs to Ledger1.

when approver belongs to different ledger scenario:-

Above 10 K EUR Invoice approver is example as "Y" and Employee assignment level "Ledger2" assigned but not receiving approval notifications while Invoice created for ledger1

So is it because of the different ledger assignment at employee ?