How does Shopify notify the third-party shipping service app to create logistics orders

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I'm working on a third-party shipping service application.I've called the CarrierService REST API to create a shipping service, but I can't configure the developed third-party shipping service application in the development store, and I still don't know what notification callback interface the Shopify store USES to notify my shipping service application to create a logistics orderganwg_1-1605491788154.pngganwg_2-1605491994958.png