com.adobe.granite.workflow.core.job.TimeoutHandler WorkItem does not exist

[pawanpatilrocks]

We have created custom scheduled activation workflow but we are getting

com.adobe.granite.workflow.core.job.TimeoutHandler WorkItem does not exist

When I schedule publish later or unpublish later alone then it works fine but when do schedule publish and schedule  unpublish simultaneously (schedule publish first and unscheduled publish later). I mean in workflow instances I can see  both workflows but after executing schedule publish what happens is unscheduled workflow is getting aborted with error com.adobe.granite.workflow.core.job.TimeoutHandler WorkItem does not exist

[rawvarun]

Check the permission of the workflow group which is triggering the custom scheduled activation workflow.

It seems the group does not have the permission.

[pawanpatilrocks]

When I schedule publish later or unpublish later alone then it works fine but when do schedule publish and schedule  unpublish simultaneously (schedule publish first and unscheduled publish later). I mean in workflow instances I can see  both workflows but after executing schedule publish what happens is unscheduled workflow is getting aborted with error com.adobe.granite.workflow.core.job.TimeoutHandler WorkItem does not exist