gistfile1.php

    public function paymentAction(Request $request)
    {
        $paymentType = $this->createPaymentForm($request);
        $paymentType->handleRequest($request);
        if (!$paymentType->isValid()) {
            return $this->renderErrors($paymentType);
        }
        //NEED REMOVE IT AS SOON AS POSSIBLE
        $contractId = $request->get('contract_id');
        $contract = $this->getDoctrine()
            ->getManager()
            ->getRepository('RjDataBundle:Contract')
            ->findOneWithOperationsOrders($contractId);
        $groupId = $contract->getGroup()->getId();

        if (in_array($groupId, array(110,113))) {
            return new JsonResponse(
                array(
                    $paymentType->getName() => array(
                        '_globals' => array(
                            'Your property manager is not accepting payments at this time.'
                        )
                    )
                )
            );
        }
        //FINISH
        return new JsonResponse(
            array(
                'success' => true
            )
        );
    }

src/RentJeeves/CheckoutBundle/Controller/PayController.php