Magento 2：未定义命名空间前缀“ rpc”

Question

我正在尝试通过Magento 2和内部ERP进行集成。

我将SOAP Web引用添加到了Visual Studio 2017（C＃）项目中。

当我尝试登录时，在身份验证期间出现此错误

  

“ integrationAdminTokenServiceV1CreateAdminAccessToken”：

     

“未定义命名空间前缀'rpc'”

integrationAdminTokenServiceV1.integrationAdminTokenServiceV1Service service =
    new integrationAdminTokenServiceV1.integrationAdminTokenServiceV1Service();

service.Url = "http://host/soap/default?services=integrationAdminTokenServiceV1";


integrationAdminTokenServiceV1.IntegrationAdminTokenServiceV1CreateAdminAccessTokenRequest request =
    new integrationAdminTokenServiceV1.IntegrationAdminTokenServiceV1CreateAdminAccessTokenRequest();
request.username = "alberto"; 
request.password = "******";

service.SoapVersion = System.Web.Services.Protocols.SoapProtocolVersion.Soap12;

integrationAdminTokenServiceV1.IntegrationAdminTokenServiceV1CreateAdminAccessTokenResponse response =
    service.integrationAdminTokenServiceV1CreateAdminAccessToken(request);

有人可以帮助我解决此错误吗？