Can I define an Accounting Overhead rule with Negative Rates

Summary:

Is Defining an Accounting Overhead rule with Negative Rates allowed?

Content (please ensure you mask any confidential information):

There is a unique requirement to define an Accounting Overhead rule with Negative Rates for one of our Customer. Is it possible?

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

25A

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