post https://marketplace.walmartapis.com/v3/ca/fulfillment/shipment-tracking
The purpose of this service is to capture tracking information from sellers.
For small parcel shipments, sellers must provide tracking information, including the carrier name and tracking numbers. WFS will use this data to update the expected delivery date and adjust fulfillment inbound capacity to avoid delays.
Sellers can view the updated expected delivery date through the Seller Center UI or by calling the Get Inbound Shipment Items API.