The daily summaries of the period %1 – %2 could not be summarized into a single summary on the array member %3. The error description is: %4. Use the source location %5 to report the failure.

Details
Product:	Internet Security and Acceleration Server
Event ID:	21019
Source:	ISA Server H.323 Filter
Version:	4.0.3443.594
Component:	ISA Server Services
Message:	The daily summaries of the period %1 – %2 could not be summarized into a single summary on the array member %3. The error description is: %4. Use the source location %5 to report the failure.

Explanation
This failure may occur for one of the following reasons: The log summary configuration is invalid.The log summaries can not be accessed.The merged log summary can not be created.

User Action
Review other alerts to determine the cause of the problem.Check the validity of the log summary configuration.Check if there is enough disk space on the ISA Server computer generating the report.