GDS\Gateway\RESTv1::beginTransaction PHP Méthode

    public function beginTransaction($bol_cross_group = FALSE)
    {
        if ($bol_cross_group) {
            throw new \Exception("Cross group transactions not supported over REST API v1");
        }
        $this->executePostRequest('beginTransaction');
        if (isset($this->obj_last_response->transaction)) {
            return $this->obj_last_response->transaction;
        }
        return null;
    }