[Users & Groups] > [Advanced Options] "Unknown Alias"

Dear Apple Community,

My apologies in advance if this query seems noob but I'm at a loss with the following configuration (see below).

I have only just purchased (less than 24hours) a brand new 2016 Apple Mac Pro 13", upgrading from a 2015 Macbook 12" machine.

I noticed during the stages of final backup prior to powering up the new machine that there was in fact a "advanced options" section behind the admin user (me) located in [User & Groups].

This was the first time I noticed the very odd looking Alias name (see yellow highlighted section)

Can someone please help me?? I have no idea what this is. What any of it means.

I would really appreciate any feedback, assistance &/or guidance from the Apple community.

Cheers,

BigBossBoys