INITIALIZATION
Short Reference
ABAP Syntax INITIALIZATION.
What does it do? This event keyword defines an event block for
initializing an executable program. The associated event is triggered by
the ABAP runtime environment
during the flow of an
executable program , directly after
LOAD-OF-PROGRAM and before the
selection screen processing of
any existing standard selection screen. This enables the input fields of
the selection screen to be
initialized once-only, including those fields defined in the
logical database associated with
the program.
Latest notes: When an executable program defines a standard selection
screen, it is called again by the ABAP runtime environment after
execution, which triggers the INITIALIZATION event again. In this
case, initializing parameters or selection criteria of the selection
screen has no effect, because they are automatically supplied with the
preceding user inputs from the selection screen during the
selection screen event AT
SELECTION-SCREEN OUTPUT . To explicitly initialize the selection
screen for each call, the event AT SELECTION-SCREEN OUTPUT must
be used.
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