There are multiple reasons why the mileage expense is not being calculated as expected.
The car's details were changed. If changes are made to a claimant's car after they submit a mileage trip before the change has been approved by their manager, the system will not pick the car's CC.
To check if an update has been made to the car details :
Navigate to CoreExpense, Reference C-C, Car
Search for the claimant's car
Click View Car Audit
Check to see whether the car had been updated around the time of the trip in question
The F.C.A Start Date has not been populated
Navigate to CoreExpense, Reference C-C, Claimant.
Ensure that F.C.A. Start Date field has been populated.
📌 Note: F.C.A. Start date may not be used depending on your environment.
There is no mileage rate setup that the claimant falls under.
Go to Expense, Reference, Reference M-R, Mileage.
Ensure there is a rate set up that this claimant falls under.
If not, check that the car details saved against the claimant are correct or enter a new mileage rate as appropriate.
If you've tried the above options and the issue still persists, please raise an online support case and reference this article in the case.