What if a temple ordinance card that is reserved for four months has expired and it was taken to do the ordinances at the temple?
You should check first to see whether the work has been reserved by someone else but, if not, you can go ahead and do the work.
This is the relevant knowledge article - https://www.familysearch.org/en/help/helpcenter/article/do-family-name-cards-expire which confirms Graham Buckell's post.
The names from the Temple with a four-month reservation period. When the card expires, I understand that the names will disappear from My Reservation list and those names may be sent to someone else and the card may be reprinted.
If they didn't check and the expired card can perform the Temple ordinances. So the person who went to the Temple first had the right to perform the ordinances, is that true?
Yes. If the reservation had expired, someone else could pick up the reservation and the ordinances could be duplicated. A righteous waste of time!
The ordinance which was performed first would be the ordinance that would be in effect and the ordinance which would display in Family Tree.
Thanks for all the answers.
To prevent duplicate ordinances. I think there should be an expiration date on the ordinance card.