AWB stands for Airway Bill which is used to track a shipment and show its delivery status.
Some last-mile carriers do not have API integrations with marketplaces. If an online seller seeks to partner with such a carrier, he/she needs to manually update the AWB number under Tracking Number each time an order is to be shipped.
In SelluSeller, sellers can perform a one-time setup of the AWB series per carrier, through which all orders will be sequentially assigned with AWB numbers, till the end of the series.
Hope this answers your question!
Check out how you can configure the AWB series in SelluSeller here.