The merchant and integrator can cancel an invoice which has not yet been
rejected and has not
expired. The cancelling will be executed asynchronously and the callback will be sent to you with status.
If the customer has chosen to pay at a later point, then the invoice can still be canceled by the merchant. The customer does not receive a notification. Changes will be visible in the MobilePay Activity List. The
pending Invoice Payment will be changed to
canceled. On payment date (if the user set the invoice to be paid at later point), MobilePay checks the status of the invoice. If it is
canceled , then MobilePay ignores "Pay" command.