Policy ID.
Revision number, which increments by 1 each time the policy is updated. To prevent conflicting changes, the existing revision must be used when updating a policy. You'll get an error if you try to use the previous revision.
Date and time when the policy was created in yyyy-mm-ddThh:mm:sssZ format.
Date and time of the policy's latest update in yyyy-mm-ddThh:mm:sssZ format.
ID of the event to which the policy belongs.