我有一个 SOAP 服务器来处理来自 QuickBooks Web Connector 的连接。它调用的第一个方法是“authenticate”，它正确返回它期望的数据，但是它给了我错误
QBWC1012: Authentication failed due to following error message.
Object reference not set to an instance of an object.
我对此一无所知，网上似乎没有解决方案。错误消息并没有真正给我任何继续的信息。
如果有人知道我可以在哪里找到更多相关信息，我将不胜感激。
以下是该问题的 WC 错误日志：
20140215.17:15:32 UTC : QBWebConnector.RegistryManager.setUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock has been set to False
20140215.17:15:32 UTC : QBWebConnector.RegistryManager.setUpdateLock() : ********************* Update session unlocked *********************
20140215.17:15:32 UTC : QBWebConnector.WebServiceManager.DoUpdate() : Update completed with errors. See log (QWClog.txt) for details.
20140215.17:15:32 UTC : UpdateThisScheduledApp() : QBWC1031: Update completed with some error. Application has been notified of the error accordingly. See QWCLog for further information.
20140215.17:16:30 UTC : UpdateThisScheduledApp() : Password management - Started
20140215.17:16:30 UTC : UpdateThisScheduledApp() : Password management - Ended
20140215.17:16:30 UTC : UpdateThisScheduledApp() : Performing SCHEDULED UPDATE for application = PManager SOAP
20140215.17:16:30 UTC : QBWebConnector.RegistryManager.getUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock = FALSE
20140215.17:16:30 UTC : QBWebConnector.RegistryManager.setUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock has been set to True
20140215.17:16:30 UTC : QBWebConnector.RegistryManager.setUpdateLock() : ********************* Update session locked *********************
20140215.17:16:30 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : Initiated connection to the following application.
20140215.17:16:30 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppName: PManager SOAP
20140215.17:16:30 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppUniqueName (if available): PManager SOAP
20140215.17:16:30 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppURL: https://[SNIP]/pmanager/soapserver.php
20140215.17:16:30 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : *** Calling serverVersion().
20140215.17:16:31 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : Received from serverVersion() following parameter:<serverVersionRet="">
20140215.17:16:31 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : This application sent a null for server version. Allowing update operation.
20140215.17:16:31 UTC : QBWebConnector.SOAPWebService.do_clientVersion() : *** Calling clientVersion() with following parameter:<productVersion="2.1.0.30">
20140215.17:16:32 UTC : QBWebConnector.SOAPWebService.do_clientVersion() : Received from clientVersion() following parameter:<clientVersionRet="">
20140215.17:16:32 UTC : QBWebConnector.SOAPWebService.do_clientVersion() : This application agrees with the current version of QBWebConnector. Allowing update operation.
20140215.17:16:32 UTC : QBWebConnector.SOAPWebService.do_authenticate() : Authenticating to application 'PManager SOAP', username = '[SNIP]'
20140215.17:16:32 UTC : QBWebConnector.SOAPWebService.do_authenticate() : *** Calling authenticate() with following parameters:<userName="[SNIP]"><password=<MaskedForSecurity>
20140215.17:16:33 UTC : QBWebConnector.SOAPWebService.do_authenticate() : QBWC1012: Authentication failed due to following error message.
Object reference not set to an instance of an object.
More info:
StackTrace = at QBWebConnector.WebService.do_authenticate(String& ticket, String& companyFileName)
Source = QBWebConnector
20140215.17:16:33 UTC : QBWebConnector.RegistryManager.setUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock has been set to False
20140215.17:16:33 UTC : QBWebConnector.RegistryManager.setUpdateLock() : ********************* Update session unlocked *********************
20140215.17:16:33 UTC : QBWebConnector.WebServiceManager.DoUpdate() : Update completed with errors. See log (QWClog.txt) for details.
20140215.17:16:33 UTC : UpdateThisScheduledApp() : QBWC1031: Update completed with some error. Application has been notified of the error accordingly. See QWCLog for further information.
SOAP 响应发送到 WC：
<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns1:authenticateResponse xmlns:ns1="http://developer.intuit.com/">
<return xsi:type="SOAP-ENC:Array" SOAP-ENC:arrayType="xsd:string[2]">
<item xsi:type="xsd:string">8d51474324d94e25aa1e6670da584204</item>
<item xsi:type="xsd:string">C:/Path/File.QBW</item>
</return>
</ns1:authenticateResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
可能有点晚了，但为了防止它对其他人有帮助，我遇到了类似的问题，并将 QWC 文件中的样式从“RPC”更改为“DocWrapped”解决了该问题。
2017 年 5 月更新：
OP 的问题与版本号不匹配有关，但我也遇到了相同的症状，该问题与 QWC 配置中的样式不匹配有关。根据QBWC_proguide https://developer-static.intuit.com/qbSDK-current/doc/PDF/QBWC_proguide.pdf正确的版本取决于服务器设置，但有效的选项包括：“Document”（默认）、“DocWrapped”和“RPC”。
对于我的 Rails 设置，“Document”或“DocWrapped”都有效。
更改此配置后，删除并重新添加 Web Connector 应用程序。
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