Unable to create new RULE for Transaction Type:Payables Invoice Approval

I am enabling AME approval setup for AP invoice for ebs R12.2.8.

Have created new user for setup and assigned below roles to user.

-Approvals Management Administrator

-Approvals Management Business Analyst

-Functional Administrator

-System Administrator

-Payable Manager

Created New grant for user with below details:

SET: AME Calling Applications

Object: AME Transaction Types

Data Context Type: All Rows

while creating new rules for Transaction Type:Payables Invoice Approval from responsibility "Approvals Management Business Analyst" getting below error.

"Error Page

You have encountered an unexpected error. Please contact your System Administrator for assistance.

"

Is there anything I am missing during setup ? Please help.