How to customize policy violation message error in Expenses?

Summary:

We need to customize error message once user enters expense amount which exceeds the rate based on policy. This will let employee know which amount then need to raise for reimbursement.

Content (required):

Policy violation message error in Expenses

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):