Possible cause: The alarm rule used in the alarm policy is deleted.
Handling method: Change the alarm rule used in the alarm policy and enable the AS policy again.
Possible cause: The periodic policy has expired.
Handling method: Change the start time and end time of the periodic policy and enable the policy again.
Possible causes: The triggering time of the scheduled policy has expired.
Handling method: Change the triggering time of the scheduled policy and enable the policy again.
Handling method: Try again later or contact technical support.