Wrong description on support tutorial?

Hi, i spend last 2 days on setup a CNAME DNS for activating cloudflare trought your partner (siteground).
in this support tutorial:


i read :

Additionally, add two records in authoritative DNS to point traffic back to the origin IP:

cloudflare-resolve-to.www.example.com A 203.0.113.1 example.com *A* 203.0.113.1

But if i setup my CNAME cloudflare-resolve-to.**www**.example.com
site return 1016 error. Then i try to setup a CNAME like this cloudflare-resolve-to.example.com
Without www and all work .

There is an error on guide? my configuration is wrong?

thanks