public CapitaInvokeResponse InvokeRequest(CapitaInvokeRequest request)
        {
            scpSimpleInvokeRequest scpInvokeRequest = CreateCapitaInvokeRequest(request);
            CapitaInvokeResponse   response         = new CapitaInvokeResponse();

            using (scpClient capitaClient = new scpClient("CapitaScpSoap", Shared.Capita.Default.CapitaWebServiceUrl))
            {
                try
                {
                    scpInvokeResponse scpResponse  = capitaClient.scpSimpleInvoke(scpInvokeRequest);
                    string            errorMessage = string.Empty;
                    if (scpResponse?.invokeResult != null)
                    {
                        if (scpResponse.requestId == request.UniqueReference)
                        {
                            if (scpResponse.transactionState == transactionState.INVALID_REFERENCE)
                            {
                                errorMessage = "Transaction aborted! It may be because of session time out or some other technical glitch from Capita";
                            }
                            else
                            {
                                response.ScpReference = scpResponse.scpReference;
                                if (scpResponse.invokeResult.status == status.SUCCESS)
                                {
                                    response.RedirectUrl = (string)scpResponse.invokeResult.Item;
                                }
                                else
                                {
                                    errorDetails item = scpResponse.invokeResult.Item as errorDetails;
                                    errorMessage = item != null ? $"ErrorId: {item.errorId}, Message: {item.errorMessage}" : "Transaction failed for some unknown reason.";
                                }
                            }
                        }
                        else
                        {
                            errorMessage = "Transaction is being invalidated b/c the unique reference returned from Capita is wrong.";
                        }
                    }

                    if (!string.IsNullOrEmpty(errorMessage))
                    {
                        response.Error        = true;
                        response.ErrorMessage = errorMessage;
                    }
                }
                catch (Exception ex)
                {
                    response.Error        = true;
                    response.ErrorMessage = "Fatal error";
                }

                return(response);
            }
        }