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("03cee757-b549-40de-a9e4-d851f9520853");;
  editImageValidate.TransactionCustomData_RSN = new Guid("272b6fb5-6b5a-4151-a1a9-37b09ee9b031");;
  
  request.Value = editImageValidate;
  LoyaltyService.ResultOfboolean result = svc.ValidateTransactionImageEditByPartner(request);
  if (result.FaultCode == 0)
  {
    
  }
  else
  {
    
    throw new Exception(result.FaultDescription);
  }
}