at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.ProcessInvokeResult(String methodName, String apiName, Int32 parameterCount, RetailTransactionServiceResponse response, Guid correlationId, Guid relatedActivityId, RetailRealTimeServiceContractChannel channel, Boolean isAsyncCall, Exception& exception, Int32& resultCount)
at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.GetResponseFromMethodAsync(TransactionServiceAsyncInvoker transactionServiceInvoker, String methodName, String apiName, Int32 parameterCount)
at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.IsAliveAsync()
at Microsoft.Dynamics.Commerce.Runtime.TransactionService.TransactionServiceClient.IsAliveAsync()
at Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckTransactionService.RunHealthCheckRequest(RunHealthCheckRealtimeRequest request)
at Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckTransactionService.Execute(Request request)
at Microsoft.Dynamics.Commerce.Runtime.CommerceRuntime.ExecuteCore[TResponse](Request request, RequestContext context, IReadOnlyCollection`1 handlersToInvoke, Boolean skipRequestTriggers, Boolean isAsyncExecution)'. ExceptionType: 'System.ServiceModel.FaultException'. ErrorResourceId: ''. HandlerTypeName: 'Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckTransactionService'. RequestTypeName: 'Microsoft.Dynamics.Commerce.Runtime.RealtimeServices.Messages.RunHealthCheckRealtimeRequest'. HandlerAssemblyName: 'Microsoft.Dynamics.Commerce.Runtime.TransactionService'. HandlerAssemblyPublicKeyToken: '31bf3856ad364e35'. UnscrubbedException: '(null)'.