3813222 - Why am I receiving a Loading Expense Failed error when trying to add a Personal Car Mileage expense using the SAP Concur mobile app?

I am trying to add a Personal Car Mileage expense to my expense report using the SAP Concur mobile app. However, every time I choose the Personal Car Mileage expense type, I receive the below error message:

I receive a Loading Expense Failed error message when adding a Personal Car Mileage expense using the mobile app. , KBA , CON-EXP-ADM-MIL , Mileage Configuration , CON-MOB , Concur Mobile , Problem