Use these commands in wsadmin to list users and groups in destination roles.
$AdminTask listUsersInDestinationRole
{-type destinationType
-bus busName
-foreignBusRole foreignBusName
-destination destinationName
-role roleName}
$AdminTask listGroupsInDestinationRole
{ -type destinationType
-bus busName
-foreignBusRole foreignBusName
-destination destinationName
-role roleName}
$AdminConfig save