Bill of lading not returned

Explanation of why the bill of lading is not made available in updates when tracking by container ID and carrier code

By default, the payload response when tracking by carrier code will not automatically provide the bill of lading if it was not manually provided when creating that particular reference.

When tracking by a singular container number, the data does not return a value for the master bill of lading by default. In terms of establishing a hierarchy, knowing the bill of lading number ranks higher than a singular container ID. A carrier does not typically share the bill of lading value back to us when we receive the data for a container based only by its ID.

If a user wishes to track a container and can also provide the bill of lading, it is highly recommended to do so. This is accomplished by utilizing the optional 'bill_of_lading' parameter of the API's Create Reference via Carrier Code endpoint.