post https://marketplace.walmartapis.com/v3/fulfillment/shipment-tracking
Capture tracking information from sellers for small parcel shipments.
Sellers must provide tracking details, including the carrier name and tracking numbers. WFS uses this data to update the expected delivery date and adjust fulfillment inbound capacity to help avoid receiving delays.
Sellers can view the updated expected delivery date through the Seller Center UI or by calling the Get Inbound Shipment Items API.