Как создать динамически экран? У меня в таблице хранятся имена полей и их типы. Как в зависимости от количества данных в таблице создать динамически экран? (на подобие SELECTION-SCREEN)

Посмотри ФМ FREE_SELECTIONS_INIT и FREE_SELECTIONS_DIALOG
Муторно только все это

GENERATE DYNPRO h f e m ID g.
...MESSAGE F1 ...LINE F2 ...WORD F3.



Parts marked with " ..." are interchangeable



Additions:

1. ... OFFSET f4
2. ... TRACE-FILE f5



Effect
Generates the screen specified in the field g.
Here, the source code is taken from the structure h and the internal tables f, e and m. The field h (screen header) should correspond to the structure D020S, the internal table f (field list) to the structure D021S, the internal table e (flow logic) to the structure D022S and the internal table m (matchcode information) to the structure D023S.

If a syntax error occurs, the error message is stored in the field f1.

If a syntax error occurs, the number of the incorrect line is stored in the field f2.
By reading the return code value, you can determine whether this line refers to the flow logic or the field list.

If a syntax error occurs, the incorrect word is stored in the field f3.

The return code is set as follows:



SY-SUBRC = 0:
The screen was generated.
SY-SUBRC <> 0:
The screen could not be generated.
SY-SUBRC = 4:
The error is in the flow logic.
SY-SUBRC = 8:
The error is in the field list.


Addition 1
... OFFSET f4



Effect
If a syntax error occurs, the position of the incorrect word is output in this field.


Addition 2
... TRACE-FILE f5

Effect
Stores performance data in this file. This addition automatically switches on the trace mode.



Related
IMPORT DYNPRO, EXPORT DYNPRO, DELETE DYNPRO, SYNTAX-CHECK FOR DYNPRO.

А в начале хэлпа зловеще так написано
This statement is for internal use only.
Incompatible changes or further developments may occur at any time without warning or notice.

Ну, ну, не верьте им - они просто стащают нас, чтобы получить таким образом преимущество
Прекрасный пример использования GENERATE DYNPRO можно найти в RS_GEN_DATA_BROWSER_DYNPROS.

У меня рядом с домом на заборе знаешь что написано,
а там стройка :0)