// non-empty session tokens.
		if !(cred.IsServiceAccount() || cred.IsTemp()) ||
			cred.SessionToken == "" {
			continue
		}

		var (
			err    error
			claims *jwt.MapClaims
		)

		if cred.IsServiceAccount() {
			claims, err = getClaimsFromTokenWithSecret(cred.SessionToken, cred.SecretKey)
		} else if cred.IsTemp() {
			var secretKey string
			secretKey, err = getTokenSigningKey()

	}

	if isGroup {
		_, err = sys.GetGroupDescription(userOrGroup)
		if err != nil {
			return
		}
	} else {
		var isTemp bool
		isTemp, _, err = sys.IsTempUser(userOrGroup)
		if err != nil && err != errNoSuchUser {
			return
		}
		if isTemp {
			err = errIAMActionNotAllowed
			return
		}

		// When the user is root credential you are not allowed to

	user, exists := globalIAMSys.GetUser(ctx, accessKey)
	if exists && (user.Credentials.IsTemp() || user.Credentials.IsServiceAccount()) {
		// Updating STS credential is not allowed, and this API does not
		// support updating service accounts.
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAddUserInvalidArgument), r.URL)
		return
	}

	if (cred.IsTemp() || cred.IsServiceAccount()) && cred.ParentUser == accessKey {