@jmr101@KevinD Thank you for the updates. I spoke with our Concur implementation manager and they are looking into it. As both of you mentioned exception level 99 cannot be submitted. We decided to use exception code 50 for exception approval.
The implementation manager is currently looking into workflow as we need additional layer of approval in the event an employee allocates their expense to another cost center for which their direct manager do not have approval authority. I have mentioned the workflow path below when an expense is submitted with exception and employee manager do have have approval authority for the cost center selected.
Employee > Employee manager > Cost Center Manager > Exception Approver > AP > Payment.