BPM Worklist data not visible to custom role

Summary:

BPM Worklist data not visible to custom role

Content (required):

I have created a brand new custom role who should have access to only few objects in the application. For this role I have also added below roles but still when try to access the worklist notification, the popup is showing a blank page. Please advise which role or priviledge is missing here. I have also added Employee abstract role to the user.

BPM Workflow Customer Relationship Management Administrator

BPM Worklist Internal Role

BPM Workflow System Admin Role

BPM Workflow Human Capital Management Administrator

BPM Workflow Customize Role

SOA Designer