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Partial cancellation is admissible for processings with applicable setting (in particular, UCS, Multicard), before the financial transaction is performed. If a partial cancellation is performed after the successful authorization, the financial transaction will be made for the remaining amount of the payment. Partial cancellation for enterprising operating based on the double-stage mode is possible only after financial confirmation (before the financial transaction is sent), and is similar from financial point of view to the payment confirmation.