Hello
This report displays all jobs/tasks that have failed on at least one resource that it was assigned to in the last N days overe here it says that it failed on 1 system.
1) You can try to execute the same job on the same system and try if that fails
2) Make sure you monitor the Logs on the agent and check whats the cause of failure
3) Run the follwing Command on the clinet to collect the agent logs
cd C:\Program Files\Altiris\Altiris Agent\
regsvr32 AeXAgentDiagnostics.dll
4) Check if the task fails on other systems as well.