Originally Posted by
pravn.kumar
You are looking at the site for Trade customers, those with company travel agencies and other ticketing facilitators. They can reissue tickets directly via electronic link to BA and the key words are needed for that. You're in the public BA channel, so you talk to BA and they'll do the rest. If you do it online via the App or BA.com it's straight forward. Personally I think the App is a bit easier in this area, but this is the screen you want on BA.com:
and you'll want the second button for the same day change.