Error logic in BO

//DTO
public class UpdateResponseDaoObject {
    int returnCode;
    String returnMessage;
    Calendar updateTimestamp;
    String updateUser;

    //<getters and setters>
}

public class UpdateResponse {
    Calendar updateTimestamp;
    String updateUser;

    //<getters and setters>
}

//DAO
public UpdateResponse update() throws ServiceException {
    UpdateResponseDaoObject daoObject;
    try {
        daoObject = translateXmlIntoUpdateResponseDaoObject(doQuery());
    } catch (RemoteException e) {
        throw new ServiceException(e);
    }
    if (daoObject.getReturnCode() != 0) {
        throw ServiceException("Code = " + daoObject.getReturnCode() +
            "; message = " + daoObject.getMessage());
    }
    return translateDaoIntoBo(daoObject);
}

//Business
public void stuff() throws MyException {
    // [preceding code ...]
    UpdateResponseDaoObject updateResponseObject;
    try{
        updateResponseObject = dao.update();
    } catch (ServiceException e) {
        throw new MyException(e);
    }
    // [proceeding code ...]
}