I have not added the per diem in the claim, it is a customer travel.

The request is approved and I got the below response from HR for payment recovery.

I have given email by HR to send an email..
Travel Expense Recovery Desk 

I have given this link to apply for the per diem as overpayment.

I raised a request here, but it seems I see in Travel  tool, that the amount due company not employee.

This amount I should be getting from Company, it is not the opposite.

As per my understanding in Concur Travel  "Amount Due Company" , can you please confirm if here it means it will be deducted from my salary?

Ideally it has to be credited to me.