Once you have designated a LOR writer and reserved a slot for the LOR you can check to see if it has been uploaded by going to www.aamc.com/eras then clicking on the Sign into MyERAS button and then signing in via the ADTS tab rather than the ERAS tab. You should be able to click on My Documents from there and see if the letter is there or not (i.e. "LOR1" will show up in the top part corresponding to the first designated LOR in the bottom of the screen)