return
			}
			targetUser = requestorParentUser
		}
		targetGroups = requestorGroups

		// Deny if the target user is not LDAP
		foundResult, err := globalIAMSys.LDAPConfig.GetValidatedDNForUsername(targetUser)
		if err != nil {
			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
			return
		}
		if foundResult == nil {
			err := errors.New("Specified user does not exist on LDAP server")

			}
		}
		return user, nil
	case madmin.LDAPProvider:
		if globalIAMSys.GetUsersSysType() != LDAPUsersSysType {
			return "", errIAMActionNotAllowed
		}
		res, err := globalIAMSys.LDAPConfig.GetValidatedDNForUsername(user)
		if res == nil {
			err = errNoSuchUser
		}
		if err != nil {
			if validate {
				return "", err
			}
			if !globalIAMSys.LDAPConfig.ParsesAsDN(user) {
				return "", errNoSuchUser
			}

		return nil, nil, errRet
	}

	groups, err := l.LDAP.SearchForUserGroups(conn, username, lookupRes.ActualDN)
	if err != nil {
		return nil, nil, err
	}

	return lookupRes, groups, nil
}

// GetValidatedDNForUsername checks if the given username exists in the LDAP directory.
// The given username could be just the short "login" username or the full DN.
//
// When the username/DN is found, the full DN returned by the **server** is

				err = errNoSuchGroup
			} else {
				entityName = foundGroupDN.NormDN
			}
		} else {
			var foundUserDN *xldap.DNSearchResult
			if foundUserDN, err = globalIAMSys.LDAPConfig.GetValidatedDNForUsername(entityName); err != nil {
				iamLogIf(ctx, err)
			} else if foundUserDN == nil {
				err = errNoSuchUser
			} else {
				entityName = foundUserDN.NormDN
			}
		}
		if err != nil {

		return updatedAt, addedOrRemoved, effectivePolicies, err
	}

	var dn string
	var dnResult *ldap.DNSearchResult
	var isGroup bool
	if r.User != "" {
		dnResult, err = sys.LDAPConfig.GetValidatedDNForUsername(r.User)
		if err != nil {
			iamLogIf(ctx, err)
			return updatedAt, addedOrRemoved, effectivePolicies, err
		}
		if dnResult == nil {

				return wrapSRErr(errNoSuchGroup)
			}
			entityName = foundGroupDN.NormDN
		} else {
			var foundUserDN *xldap.DNSearchResult
			if foundUserDN, err = globalIAMSys.LDAPConfig.GetValidatedDNForUsername(entityName); err != nil {
				iamLogIf(ctx, err)
			} else if foundUserDN == nil {
				return wrapSRErr(errNoSuchUser)
			}
			entityName = foundUserDN.NormDN
		}
		if err != nil {