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Home > Success Center > Server & Application Monitor (SAM) > SAM - Knowledgebase Articles > Hardware Health: Unknown net object prefix: "AH", "AHT", "AHS" error from Active Alerts resource

Hardware Health: Unknown net object prefix: "AH", "AHT", "AHS" error from Active Alerts resource

Overview

The following Hardware health error occurs:

Unknown net object prefix: "AH", "AHT", "AHS" error from Active Alerts resource.
 
There are currently two hardware health netobjects. The obsolete ones have the APM prefix (APM Hardware, APM Hardware Type, and APM Hardware Sensor). The new netobjects lack the prefix APM (Hardware, Hardware Type, Hardware Sensor).

Environment

All SAM versions

Resolution

The workaround is to edit your alerts and change the netobjects (in the trigger section) to use the new ones. 
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