I thought DD214 mistakes were supposed to go away when they shitcanned IBM Selectrics and carbon paper.
Seriously, all your awards and various schools should be typed out in full, not abbreviated, providing there's room. Purple Heart, not PH. Mountain Warfare School, not MWS, etc etc. Your company 1st Sgt has the responsibility of making sure all information on the DD214 is correct, MOS, everything, before you walk out the door. If anything needs to be added or amended later, it goes on a DD215. In theory at least the 214 should be written in such a way that the average civilian prospective employer can read all the pertinent stuff without having to ask for translation. There should be absolutely no typos, no misspellings, and no sloppiness.
Goddammit, it pisses me off. It's one of the most important documents you'll ever own and it'll follow you right to your funeral.