RFC destination role for the user

Hi

I am trying to connect from PI to SCM. SCM has a user ID PIAPPLUSER created with role "SAP_XI_APPL_SERV_USER" and i am trying to use this user in PI sm59 under abap connections, but i am getting adapter error at the outbound side as seen in SXMB_MONI. Do we need to have any other role assigned to the user. FYI, If i use my user id which has SAP_ALL access the connection works good and the idoc gets processed successfully. So i suppose there should be some other role which is needed. Please suggest.