I am using payment_paypal module in odoo8.I created two sandbox paypal account,and i put one sandbox seller account as my company paypal account,in odoo8 backend in acconting settings.i set paypal account.when i m buying product with another paypal account from frontend shop menu,it giev me response like in terminal lers.main: Beginning Paypal IPN form_feedback with post data {'address_city': u'India', 'address_country': u'India', 'address_country_code': u'IN', 'address_name': u'test Red', 'address_state': u'Maharashtra', 'address_status': u'unconfirmed', 'address_street': u'Add\r\nAdd', 'address_zip': u'88', 'business': u'testsaller@gmail.com', 'charset': u'windows-1252', 'custom': u'{"return_url": "/shop/payment/validate"}', 'first_name': u'test', 'handling_amount': u'36.69', 'ipn_track_id': u'7643496463c2e', 'item_name': u'Your Company: SO103', 'item_number': u'SO103', 'last_name': u'Red', 'mc_currency': u'USD', 'mc_gross': u'931.69', 'notify_version': u'3.8', 'payer_email': u'testbuyer@gmail.com', 'payer_id': u'VNFXZS7D2VSP2', 'payer_status': u'unverified', 'payment_date': u'22:45:55 Jul 29, 2016 PDT', 'payment_gross': u'931.69', 'payment_status': u'Pending', 'payment_type': u'instant', 'pending_reason': u'unilateral', 'protection_eligibility': u'Ineligible', 'quantity': u'1', 'receiver_email': u'testsaller@gmail.com', 'residence_country': u'IN', 'shipping': u'0.00', 'tax': u'0.00', 'test_ipn': u'1', 'transaction_subject': u'', 'txn_id': u'4R560963KR9675120', 'txn_type': u'web_accept', 'verify_sign': u'AUaxvSojqajxsiGA9qXfGuCulUctAjh6DxgVAcxF87A8CXT1n45WHkpF'} it returns 'txn_id': u'4R560963KR9675120' but in backend its not savingpayment transaction,is paypal module have limited functionality?