There are needs to release a PM as a work order only once in a future time. This feature is available in Release R21e.
1. Release PM Once by Time
A new flag "Release Once" is added to PM to release a PM only once based on "Next due".
2. Release PM Once by Meter
This is implemented by checking the "Release Once" flag in a PM meter so the PM is released once based on that meter. See "Tiered Meter Readings" in the resource section below for more info.