Starting July 2021, Tracking IDs are required based on carrier selected


What is changing?

Starting July 2021, Amazon will mandate tracking IDs based on the carrier selected when selling partners confirm shipments using the POST_ORDER_FULFILLMENT_DATA and POST_FLAT_FILE_FULFILLMENT_DATA feed types in Selling Partner API (SP API) and Amazon Marketplace Web Services (MWS).


  • The Tracking ID is represented by the ShipperTrackingNumber attribute.


  • The Tracking ID is represented by the tracking-number attribute.

Invalid tracking IDs provided at the time of shipment confirmation (for carriers with a tracking ID mandate) will result in an error and shipment will not be confirmed.

Selling partners can identify orders ship confirmed with invalid tracking IDs via this error message: "The tracking ID [tracking id] for [carrier name] does not match the expected format for the carrier. Please verify that you have entered the tracking ID and carrier name correctly."*

Which marketplaces are affected?

This change applies to all marketplaces. Due to the nature of this change, it is starting on different dates depending on the marketplace.

  • This change applies to the US starting July 7th, 2021.
  • This change applies to the UK, Germany, France, Italy, and Spain marketplaces starting July 14th, 2021.
  • This change applies to the Australia starting July 21st, 2021.
  • This change applies to the Japan starting September 29th, 2021.

Who is affected?

Developers with applications that confirm shipments are affected.

What action is required?

If you have an application affected by this change, be sure to update your application workflow to consume the error and required error codes. If the tracking ID is invalid, highlight it for appropriate action by the selling partner.

For more information

For more information, see the ‘Confirm multiple shipments with feeds’ article in the Seller Central Help for your marketplace.