Data Roles dialog box shows "Mapped Role Names" as name to map the data-roles to enterprise groups. Talking with couple people I realized that, users are not readily able to grasp two concepts of mapping data-role name with enterprise groups.
If the name is changed to "Mapped Enterprise Group" then it will little bit more clear about the intention. Also, if we can add a description like,
"One to one mapping of a enterprise group of the logged in user based on JAAS authentication on the server"
that would be informational.