Hello everybody,
today I want to share with you one of my mistakes.
Few days ago I started to develop Configuration screen, or screen which should end at xx101000. After I completed it and passed for testing I faced a challenge. The page should display only the first record. So I implemented some logic which selected the first record. After that I re-read one of the manuals and found that DataSet have property PageLoadBehavior which can be set to GoFirstRecord!!!!
After I removed my code which loaded first record, and added beforementioned property my configuration screen behaved as really configuration screeen.