Retrying Levequests

Levequest targets give players many times more EXP and skill points than normal monsters (even if not using guardian aspect). To prevent some players from taking advantage of this system by completing most of a levequest, failing on purpose, and then trying the quest again immediately, we have made it impossible to retry a levequest immediately after failing it. However, this does not mean players are not allowed to retry levequests. By returning and talking to the NPC who issued the quest, players can gain the opportunity to retry the quest objectives.

SOURCE CLICKY

This is on the Japanese Official Final Fantasy XIV Site and is a report from a prelive event. It took me bloody hours to find that so I hope you are happy now and we can finally put an end to this discussion about this "exploit"

/endthread