The user has the nologin or noattach flag set.
The user has the onelogin flag set and is already logged in at another terminal or window.
The user has reached the connect-time usage limit. The user needs to wait for the usage to decay before logging in again, or the administrator can change either the user's terminal.usage attribute or terminal.limit attribute to give the user additional terminal connect-time.
The user's lnode may exist but it has been orphaned because its parent lnode has been removed. See Orphaned Lnodes.
None of the Solaris Resource Manager limitations listed above apply to the superuser.
Although the user is able to log in to the system, if there is no lnode corresponding to the UID of the user (an lnode has not been set up for that user's account), the problem is identified by a message indicating that: No limits information is available. Refer to Orphaned Lnodes.