How to write off remaining balance for personal charge on expense report

Summary:

Employee had a personal expense on their company credit card. Employee submitted partial payment for amount due.

How do you write off the balance due from employee?

Content (please ensure you mask any confidential information):

Cannot create an invoice as employee is not a supplier in the system.

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

Oracle fusion

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