if err != nil {
		if err == errNoSuchUser || err == errNoSuchGroup {
			if globalIAMSys.LDAPConfig.Enabled() {
				// When LDAP is enabled, warn user that they are using the wrong
				// API. FIXME: error can be no such group as well - fix errNoSuchUserLDAPWarn
				writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errNoSuchUserLDAPWarn), r.URL)
				return
			}