OBB网上订票取票的问题

在obb上订了从维也纳去布达佩斯的票， 收到如下取票通知：
You receive a collection code which you can use to collect your ticket from all ÖBB self-service machines or ÖBB ticket offices in Austria. Your ticket is ready for collection in only 15 minutes.

什么叫in only 15 minutes啊？过几个月取票机上取票不会有问题吧。
谢谢大家！