Miss-sold alcohol

[Simplysally]

One of the Tescos near me doesn't want alcohol "miss-sold" in their stores according to the poster on the till.

Surely that should be "mis-sold"?

I was so busy looking at this sign on the adjacent till, I nearly forgot to move up the queue at my till [grin.]

What does it mean anyway?

It's saying that if you look under 21, the cashiers are trained to ask you for ID to prove you are over 18. If they sold alcohol to a minor, it would be mis-sold.