The standard is this:
If the error is caused by a production setup issue (like the space between words and a period) and is subsequently fixed (like removing said space), that's a variation that gets catalogued here.
If the "error" is caused by missing foil, missing the back getting printed, missing the front getting printed, getting miscut, getting the wrong card back, or by getting the incorrect foil stamp on the card, it doesn't get catalogued here.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).