The Per Diem expense category is not included in the list of Policy Rule Types on the Expense Report Policies list. As a result, we are unable to enforce any of our Expense Report Policies for that category of expenses.

In our scenario, we require a project number on each expense, and without the ability to enforce a policy for Per Diem expenses we get incomplete expense reports submitted, and they must be sent back to submitter for rework (and delay in reimbursing employees).