How passwd_import Works
When passwd_import processes entries, it compares group and password file entries to registry entries. It can find two types of conflicts:
Name Conflicts
These conflicts arise when the same name string is defined in the registry and the group or password files. The names joe 102 and joe 555 exemplify such
a conflict. The duplicate name can represent the same user or two different users.
UNIX ID Conflicts
These conflicts arise when the same UNIX ID is defined in the registry and the group or password files for users with different names. The names joe 102 and
ann 102 exemplify such a conflict.
These conflicts can be found separately, as in the preceding examples, or together. For example, a registry entry of joe 102 and a UNIX entry of joe 102 are in conflict. When a conflict is found, you must either supply the information that is used to change the password and group file entries or inform passwd_import not to import that entry. The passwd_import command makes no changes to existing registry principals, groups, or accounts; but, if you so specify, it will create new principals, groups, and accounts in the registry that are based on the group and password files.
More:
The passwd_import Processing Steps
Registry Entries Created by passwd_import