Description: If, while checking to see which policy conditions match an element, 2 or more ready policies in the same precedence group match the same element, the pmPolicyPrecedence object provides the rule to arbitrate which single policy will be active on 'this element'. Of policies in the same precedence group, only the ready and matching policy with the highest precedence value (e.g., 2 is higher than 1) will have its policy action periodically executed on 'this element'.

When a policy is active on an element but the condition ceases to match the element, its action (if currently running) will be allowed to finish and then the condition-matching ready policy with the next-highest precedence will immediately become active (and have its action run immediately). If the condition of a higher-precedence ready policy suddenly begins matching an element, the previously-active policy's action (if currently running) will be allowed to finish and then the higher precedence policy will immediately become active. Its action will run immediately, and any lower-precedence matching policy will not be active anymore.

In the case where multiple ready policies share the highest value, it is an implementation-dependent matter as to which single policy action will be chosen.

Note that if it is necessary to take certain actions after a policy is no longer active on an element, these actions should be included in a lower-precedence policy that is in the same precedence group.