Problem: If you are receiving this error then there is a conflict on how the order in question was handled.
For example, if the order were to be cancelled in Magento, but were to be released in Counterpoint, then this could cause this issue. This error could also result in issuing said refund while also shipping the product to the customer.
Solution: If an order in Magento is cancelled, then you must then do a validated return in Counterpoint. When you do this, please be sure to include the " add Misc charges" so that the customer may receive their full refund including the shipping fees.