This is a custom rising threshold value configured specifically for one resource user's or group's usage of a resource owner sub-type, and if no such custom threshold has been set, this table simply will not have a row for that relationship at all. This lets an admin override the systemwide global threshold for one particular heavy-consuming process or group without changing the alerting behavior for every other consumer of that same resource pool. An admin might leave the global processor memory rising threshold at 80 percent for everything, but add a custom entry setting a stricter 50 percent rising threshold specifically for the BGP Router process, known to leak memory when misbehaving.