Users see the following error messages in spool output:
D:\CA\WA Agent\spool\MANAGER\MAIN\APPL1234\SOMEJOB (Access is denied)
Release : 12.0
Component : Workload Automation System Agent
The "access denied" is usually related to the permission of user executing the job.
The WA Agent runs the job as the user defined in the job. Check the permission of the user (in job) and make sure it has read and write permission to the agent spool directory.