INITIALIZATION is a keyword used in SAP ABAP programming.This tutorial covers its introduction & syntax details.
before the selection screen is displayed.
The parameters (PARAMETERS )
and selection criteria (SELECT-OPTIONS ) defined in the program already contain
default values (if specified). You can assign different values here and also
change the database-specific selections.
In contrast to R/2 , this event
is also executed during background processing.
Define the last
day of the previous month as the key date:
PARAMETERS QUAL_DAY TYPE D
QUAL_DAY+6(2) = ’01’.
QUAL_DAY – 1.
Here, the default value of QUAL_DAY is the current
date, e.g. 05.04.88 ( QUAL_DAY = ‘19880405’). Two subseqent statements set the
date first to the beginning of the month, e.g. 01.04.88 ( QUAL_DAY = ‘19880401’)
and then, by subtracting one day, to the last day of the previous month, e.g.
31.03.88 ( QUAL_DAY = ‘19880331’).
In more precise terms,
INITIALIZATION is executed in the following steps:
Specify default values for
the selections. Execute the event INITIALIZATION. Import variant (if used to
start the report). On SUBMIT , the values specified for each WHERE clause are
also transferred, if necessary. Execute the event AT SELECTION-SCREEN OUTPUT ,
if it occurs in the report (unlike INITIALIZATION , this event is always
executed for PBO of a selection screen). Display selection screen. Transport the
screen fields containing user input to the report fields. Continue with
Since INITIALIZATION is only executed once
when you start the report, it is not suitable for screen modifications such as
suppressing individual parameters (LOOP AT SCREEN , MODIFY SCREEN ) because
these changes would disappear again when the user pressed ENTER. The correct
event for screen modifications is AT SELECTION-SCREEN OUTPUT .
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