It was confirmed by a Zuora Support rep that the product does not currently support negative usage. This is a real use case for us. We currently import usage on a daily basis. In some cases, one-off adjustments need to be made for usage already submitted to Zuora. Because Zuora does not support the import of negative usage, the total counts are inflated and require manual intervention on the individual usage entries or on invoices. No alternative solution or best practice alternatives was offered by Zuora. It has been considered to send a single usage stat every month before a customer's billing date but this causes challenges with timing.
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