Does API allow to track more than one container at once?
You can track more than one container at once with BL number. However, if you have more than one container which is carried by same shipping line but not belongs the same BL you need to enter the container numbers respectively and submit the form after entering shipping line and other required data.
However, if you have a ShipsGo account then you can use excel upload option in order to track more than one container at once. The steps for uploading excel as follows;
1. Download excel sample
2. Fill the sample by sticking the sample structure
3. Upload prepared excel file by using "Browse" button
You can reach "Excel Upload List" option from "Track New Shipment" section at the left sidebar of your dashboard.