ChrisA330 is 100% correct, with the exception of both Adria (JP) and Aegean (A3) who will both request a locator (which you obviously won't have) or the 014 ticket number. They say its for "security and privacy" reasons.
I just did it myself with LH, TG, TK, LX and BD. No worries at all.
Enjoy your trip!
PointWeasel