By default, the Username Case & Accent Sensitive option is enabled in both FortiOS and FTC, but you can disable it in FGT and FTC, respectively. To use this feature, you must ensure that they are set in the same way in both FortiOS and FTC, whether they are "enabled" or "disabled". If they are different, the setting in the FortiOS overrides the one in FTC.
When Username Case & Accent Sensitive is disabled, FTC ignores case and accent variations in usernames when processing login requests; when enabled, FTC checks the case and accent conformity in a username and approves the login request only when it matches exactly what is in the database.
This feature only applies to individually imported LDAP users with