[USER-EXIT] LT04 on pressing "ENTER" button

Hello Gurus,

I am looking for the USER-EXIT on LT04 Transaction, when pressing ENTER.

1) First screen

2) Pressing ENTER, 10 items of 100 Qantities has been created.

In fact, I would like to put more information on the ALV when pressing ENTER.

Could you help?

Thank you very much.

Rachid.