Royal Mail Tracking (for Client-Side App) V3 REST API

The Royal Mail Tracking (for Client-side App) REST exposes a web service that
allows account customers to receive track-and-trace information for their
mail items.

The API is backend for ebusiness and Post Office track and trace webapps of
the Royal Mail website (https://www.royalmail.com/track-your-item [1]) For
B2B logged in users , this API…