Searching the namespace for binding information requires that a client specify a starting point for the search. A client can start with a specific server entry. However, this is a limiting approach because the client is restricted to using one server. To avoid this, a client can start searching with a group or a profile instead of with a server entry. Searches that start with a profile or a group should encounter the server entry of a compatible server. If such an entry is not encountered, a search operation returns the rpc_s_no_more_bindings status code to the client. When calling the routines rpc_ns_binding_import_next( ) or rpc_ns_binding_lookup_next( ), a client must track whether the routine returns this status code.
More:
The import_next and lookup_next Search Algorithm
Examples of Searching for Server Entries
Expiration Age of a Local Copy of Directory Service Data