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In this lesson you will learn about the advantages of using the selection screen. In addition to the previous PARAMETERS definitions, you will also learn about the SELECT-OPTIONS selection criteria on with which the user can specify significantly more complex restrictions for the data selection.
that you will learn how to use the ABAP events AT SELECTION-SCREEN for implementing an input or authorization check with a possible error dialog using the selection screen.
Architecture and Purpose of Selection Screen
In general, selection screens are used for entering selection criteria for data selection.
For example, if the program creates a list of data from a very large data base table, it often makes sense for the user to select the data records he actually requires and only reading those from the data base.
Selection Screen Attributes
The selection screen has the following standard functions:
- Texts on the selection screen (selection texts)can be maintained in several languages.
- The system carries out type checks: Any user input that does not match the type for the input field is ignored by the SAP GUI and therefore does not even appear on the selection screen.
- In addition to single value entries (PARAMETERS), you can also implement complex selections(SELECT-OPTIONS) on the selection screen.
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