Answer / paramjeet

ALV is Application List viewer. Sap provides a set of ALV
(ABAP LIST VIEWER) function modules which can be put into
use to embellish the output of a report. This set of ALV
functions is used to enhance the readability and
functionality of any report output. Cases arise in sap when
the output of a report contains columns extending more than
255 characters in length. In such cases, this set of ALV
functions can help choose selected columns and arrange the
different columns from a report output and also save
different variants for report display. This is a very
efficient tool for dynamically sorting and arranging the
columns from a report output. The report output can contain
up to 90 columns in the display with the wide array of
display options.

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