Skip to content

ABAP Keyword Documentation →  ABAP - Reference →  User Dialogs →  Selection Screens 

Selection Screen Processing

Selection screen processing packages the dynpro flow logic together with the sending of the selection screen. No dialog modules of the program are called. Instead, various selection screen events are triggered for which event blocks can be programmed. PBO processing triggers the event

event is triggered. PAI processing triggers a variety of different events

event is triggered. Selection screen processing of a displayed selection screen is ended only by selection of the following functions of the GUI status:

  • Execute or Execute + Print
    Triggers the selection screen events of PAI processing. After this, the event START-OF-SELECTION is triggered for standard selection screens called using SUBMIT. For selection screens called using dialog transactions, the program is ended. A call in the program resumes the program after the statement CALL SELECTION-SCREEN.
  • Back, Exit, or Cancel
    Triggers the event AT SELECTION-SCREEN ON EXIT-COMMAND only. After this, the program is ended for standard selection screens called using SUBMIT and dialog transactions. Otherwise, sy-subrc is set to 4 and the program resumes after the statement CALL SELECTION-SCREEN.

For all other user actions, the selection screen is called again automatically after selection screen processing is ended.

Other versions: 7.31 | 7.40 | 7.54


  • The selection screen processor also encapsulates the processing of the function codes assigned to the control elements of the selection screen. The function code that triggers PAI processing is passed to the component ucomm of an interface work area sscrfields with the type of the structure SSCRFIELDS. If an interface work area of this type is declared in a program using the statement TABLES, the function code can be accessed. It is not advisable to access the system field sy-ucomm, however, since it is not possible to guarantee that it has the same value as sscrfields-ucomm in all situations.

  • Whether a program resumes depends on the function code in the UCOMM component of the interface work area SSCRFIELDS at the end of PAI processing. If this is declared using TABLES and if this component is set to the value "ONLI" (for example, during processing of the standard selection screen of a program called using SUBMIT) and this value is assigned to the function Execute, then the event START-OF-SELECTION is triggered after selection screen processing. Overwrites of the system field sy-ucomm, however, are ignored.

  • To avoid ending the program following the processing of a selection screen called using a dialog transaction, either the next dynpro must be called using LEAVE TO SCREEN or a new dynpro sequence called using CALL SCREEN (during the processing of the selection screen). The statement SET SCREEN is not enough here.