Dear Hari,
I'm not clear about the steps you have performed.
You have mention about the securities class you created for stocks but the step to create corporate action is not mention in details, Could you please provide the same so that i can help you out.
mean time, Please check whether you have created corporate action as T.code FWK0
Chose CA Categories as 01 and CA type 10.
Please try with same, Also please share with me more detail of your issue.
Regards,
jain