贝宝与快速结账获得BillingAgreementID

Question

我正在与paypal使用express checkout获得计费协议id。

我遵循这个指南:

https://www.x.com/developers/paypal/documentation-tools/how-authorize-and-run-reference-transaction-express-checkout

在第一步，当我做"SetExpressCheckout":下面是代码

public string SetExpressCheckout(string Amount)
    {
        string returnURL = "http://localhost:50325/ReviewOrder.aspx" + "?amount=" + Amount + "&PAYMENTREQUEST_0_CURRENCYCODE=USD";
        string cancelURL = returnURL.Replace("ReviewOrder", "ExpCheckOut");
        string strCredentials = "USER=" + strUsername + "&PWD=" + strPassword + "&SIGNATURE=" + strSignature;
        string strNVP = strCredentials;
        strNVP += "&PAYMENTREQUEST_0_PAYMENTACTION=AUTHORIZATION&&PAYMENTREQUEST_0_AMT=25" + "&L_BILLINGTYPE0=MerchantInitiatedBilling" + "&RETURNURL=" + returnURL;
        strNVP += "&CANCELURL=" + cancelURL;
        strNVP += "&METHOD=SetExpressCheckout&VERSION=" + strAPIVersion + "&DESC=test EC payment" +"&NOSHIPPING=0" ;
        //Create web request and web response objects, make sure you using the correct server (sandbox/live)
        HttpWebRequest wrWebRequest = (HttpWebRequest)WebRequest.Create(strNVPSandboxServer);
        //Set WebRequest Properties
        wrWebRequest.Method = "POST";
        // write the form values into the request message
        StreamWriter requestWriter = new StreamWriter(wrWebRequest.GetRequestStream());
        requestWriter.Write(strNVP);
        requestWriter.Close();
        // Get the response.
        HttpWebResponse hwrWebResponse = (HttpWebResponse)wrWebRequest.GetResponse();
        StreamReader responseReader = new StreamReader(wrWebRequest.GetResponse().GetResponseStream());
        // and read the response
        string responseData = responseReader.ReadToEnd();
        responseReader.Close();
        return responseData;
    }

响应是:

    TOKEN=EC-09082530FY878870B&
    TIMESTAMP=2013-03-25T00:45:56Z&
    CORRELATIONID=3d33037174d55&
    ACK=SuccessWithWarning&
    VERSION=86&
    BUILD=5479129&
    L_ERRORCODE0=11452&
    L_SHORTMESSAGE0=Merchant not enabled for reference transactions&
    L_LONGMESSAGE0=Merchant not enabled for reference transactions&
    L_SEVERITYCODE0=Warning

如何在步骤3中获得billingagreement:

步骤3的代码为:

public string GetBillingAgreementID()
    {
        string returnURL = "http://localhost:50325/ReviewOrder.aspx" + "?amount=" + Amount + "¤cy=USD";
        string cancelURL = returnURL.Replace("ReviewOrder", "ExpCheckOut");
        string strCredentials = "USER=" + strUsername + "&PWD=" + strPassword + "&SIGNATURE=" + strSignature;
        string strNVP = strCredentials;
        strNVP += "&RETURNURL=" + returnURL;
        strNVP += "&CANCELURL=" + cancelURL;
        strNVP += "&METHOD=CreateBillingAgreement&VERSION=" + strAPIVersion + "&TOKEN=" + Session["Token"];
        //Create web request and web response objects, make sure you using the correct server (sandbox/live)
        HttpWebRequest wrWebRequest = (HttpWebRequest)WebRequest.Create(strNVPSandboxServer);
        //Set WebRequest Properties
        wrWebRequest.Method = "POST";
        // write the form values into the request message
        StreamWriter requestWriter = new StreamWriter(wrWebRequest.GetRequestStream());
        requestWriter.Write(strNVP);
        requestWriter.Close();
        // Get the response.
        HttpWebResponse hwrWebResponse = (HttpWebResponse)wrWebRequest.GetResponse();
        StreamReader responseReader = new StreamReader(wrWebRequest.GetResponse().GetResponseStream());
        // and read the response
        string responseData = responseReader.ReadToEnd();
        responseReader.Close();
        return responseData;
    }

反应是:

 TIMESTAMP=2013-03-25T00:51:34Z&
 CORRELATIONID=854e6beed1e82&
 ACK=Failure&
 VERSION=86&
 BUILD=5479129&
 L_ERRORCODE0=11455&
 L_SHORTMESSAGE0=Buyer did not accept billing agreement&
 L_LONGMESSAGE0=Buyer did not accept billing agreement&
 L_SEVERITYCODE0=Error

如何获取billingagreemtid ?是否因为"L_SHORTMESSAGE0=商家未启用参考交易"，这条消息来自"SetExpressCheckout"，我无法获得billingagreemententid ?

请帮我一下。谢谢。

Answer 1

您需要联系PayPal并要求在帐户上启用此功能，如果这是用于实时帐户。如果您需要在沙箱上启用它，您需要联系PayPal MTS并在您的沙箱帐户上启用它。