I have been told I need to get a private key and public key at http://developer.xero.com/documentation/advanced-docs/public-private-keypair/ But I am very puzzled as to how these instructions would pass any information between the 2 programs for example the instructions do not show any reference to the following: * Consumer Key * Consumer Secret Required by amember.com nor the Your Xero Network key:"" What am I missing? If it helps I get the error 05/12/13, 02:13 PM …member/payment/paypal/ipn 173.0.81.1Xero API ErrorType: oauth_problem ErrorTitle: consumer_key_unknown ErrorAdviseType: oauth_problem_advice ErrorAdviseTitle Consumer%20key%20was%20not%20recognised<br/> Exception Am_Exception_InternalError Am_Plugin_Xeroapi->onPaymentAfterInsert call_user_func [ library/Am/Event.php : 527 ] Am_Event->call [ library/Am/Event.php : 550 ] Am_Event->handle [ library/Am/Hook.php : 200 ] Am_Hook->call [ application/default/models/InvoicePayment.php : 87 ] InvoicePayment->insert [ application/default/models/Invoice.php : 1193 ] Invoice->addPaymentWithoutAccessPeriod [ application/default/models/Invoice.php : 1164 ] Invoice->addPayment [ application/default/plugins/payment/paypal.php : 269 ] Am_Paysystem_Paypal_Transaction->processValidated [ library/Am/Paysystem/Transaction/Abstract.php : 49 ] Am_Paysystem_Transaction_Abstract->process [ library/Am/Paysystem/Transaction/Incoming.php : 231 ] Am_Paysystem_Transaction_Incoming->process [ library/Am/Paysystem/Abstract.php : 463 ] Am_Paysystem_Abstract->directAction [ application/default/controllers/DirectController.php : 29 ] DirectController->__call [ library/Am/Controller.php : 118 ] Am_Controller->dispatch [ library/Zend/Controller/Dispatcher/Standard.php : 295 ] Zend_Controller_Dispatcher_Standard->dispatch [ library/Zend/Controller/Front.php : 954 ] Zend_Controller_Front->dispatch [ library/Am/App.php : 1681 ] Am_App->run [ index.php : 43 ]