Choose a carrier service for each fulfillment

An order keeps the customer’s requested shipping method separately from each fulfillment’s carrier service. A new fulfillment copies the order’s carrier service or uses the source integration’s shipping-method mapping. Changing the order later does not change existing fulfillments.

Use Set Fulfillment Carrier Service in a fulfillment-created automation to replace the mapped service. Assign Fallback Fulfillment Carrier Service fills it only when it is missing. Fulfillment Shipping Address conditions let you choose services by destination.