I would like to understand order cancellation handling for [fulfilment service]. After an order is cancelled in the shop, how can I check whether the warehouse has not picked it, has picked or packed it, or has handed it to the carrier? How does the cancellation instruction reach the warehouse, and who confirms that dispatch has stopped? If it has left, what further requests can be accepted and what remains unconfirmed? This is a process enquiry, not an instruction to cancel or intercept a shipment.