ebay number on address label?

[haylingsilversurfers]

Why do some buyers addresses have an ebay number on them?

[papso22]

https://community.ebay.co.uk/t5/Announcements/Royal-Mail-tracking-and-delivery-events-on-eBay-from-1...

I know!

[arkwebus]

@papso22

Ah thank you. I dropped off reading it and am none the wiser!