Issue with EHSM iview in portal

Hi Experts,

I have created one Custom Free style Role in the portal using the standard content of the EHSM. now the issue is when i click on any task in the workovewview i am getting the below issue.

i have followed 1787949 - Missing Configuration for iView "Change Assignee" note and done the changes accordingly but still i am facing the issue.below is the iview properties

Can anyone help me to fix the issue??

Thanks

Anil