Issue: Team requires the ability to issue credit invoices to clients to correct billing discrepanci

Summary:

Issue:

Team requires the ability to issue credit invoices to clients to correct billing discrepancies and tax adjustments.

• In some cases, a credit is required due to a billing error on a previously issued invoice. In these scenarios, a subscription, revenue, and invoice have already been processed for a specific item and amount. Team may need to issue a credit for all or a portion of that item in order to return funds to the client.
• In other cases, a credit is required due to taxes being withheld at an incorrect rate. When this occurs, the tax should have been applied at a lower rate than originally charged. In these scenarios, there may not be an existing subscription, revenue record, or invoice associated with the corrected tax amount.