code: function transactionError(response, message, body) {
    var content = errorContent(ErrorType.transaction, message, body);
    send(response, content, StatusCode.internalServerError);
  }
docs: Send an transaction error response
  
  @param response - response object
  @param message  - (optional) message to accompany and describe the
  invalid response
  @param body     - (optional) additional body to the response