using (var svc = new LoyaltyService.LoyaltyClient())
{
  var request = new LoyaltyService.ManagementGroupRequestOfTransactionImageEditValidate();
  request.Token = "Token";
  request.ManagementGroup = "Management group";
  var editImageValidate = new LoyaltyService.TransactionImageEditValidate();
  editImageValidate.EntityRSN = new Guid("62a7e9e0-1d39-4d7e-abdc-026687cad9be");;
  editImageValidate.TransactionCustomData_RSN = new Guid("d68ed853-c13b-485c-b9d6-907f252b830b");;
  
  request.Value = editImageValidate;
  LoyaltyService.ResultOfboolean result = svc.ValidateTransactionImageEditByMember(request);
  if (result.FaultCode == 0)
  {
    
  }
  else
  {
    
    throw new Exception(result.FaultDescription);
  }
}