What is ALV Block List?

DPM125 — Sun, 24 Aug 2025 10:46:39 +0000

ALV (ABAP List Viewer) is used to display reports in a structured, interactive way.
A Block List means you display multiple ALV lists one below another in the same output.
Example: You want to show MARA (Material Master general data) and then, beneath it, MARC (Plant-specific data) in the same report.
This is done using the REUSE_ALV_BLOCK_LIST_* function modules.

Steps to Create ALV Block List

Initialize block list → REUSE_ALV_BLOCK_LIST_INIT.
Add multiple reports (MARA, MARC, etc.) → REUSE_ALV_BLOCK_LIST_APPEND.
Display → REUSE_ALV_BLOCK_LIST_DISPLAY.

*&---------------------------------------------------------------------*
*& Report  ZTEST_PROGRAM_2
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT ztest_program_2.

TYPE-POOLS: slis.

DATA: it_mara TYPE TABLE OF mara,
      it_marc TYPE TABLE OF marc.

DATA: it_fieldcat TYPE slis_t_fieldcat_alv,
      wa_fieldcat TYPE slis_fieldcat_alv.

DATA : lt_events TYPE slis_t_event.


"--- Main processing

START-OF-SELECTION.

  "--- Fetch Data
  SELECT * FROM mara UP TO 20 ROWS INTO TABLE it_mara.
  SELECT * FROM marc UP TO 20 ROWS INTO TABLE it_marc.

  "Initialize ALV Block List
  CALL FUNCTION 'REUSE_ALV_BLOCK_LIST_INIT'
    EXPORTING
      i_callback_program = sy-repid.

  "Prepare field catalog for MARA
  PERFORM build_fieldcat USING 'MARA' it_fieldcat.

  "Append MARA list
  CALL FUNCTION 'REUSE_ALV_BLOCK_LIST_APPEND'
    EXPORTING
      is_layout   = VALUE slis_layout_alv( colwidth_optimize = 'X' )
      it_fieldcat = it_fieldcat
      it_events   = lt_events
      i_tabname   = 'MARA'
      i_text     = 'Material Master - MARA'
    TABLES
      t_outtab    = it_mara.


  CLEAR it_fieldcat.

  "Prepare field catalog for MARC
  PERFORM build_fieldcat USING 'MARC' it_fieldcat.

  "Append MARC list
  CALL FUNCTION 'REUSE_ALV_BLOCK_LIST_APPEND'
    EXPORTING
      is_layout   = VALUE slis_layout_alv( colwidth_optimize = 'X' )
      it_fieldcat = it_fieldcat
      i_tabname   = 'MARC'
      i_text     = 'Plant Data - MARC'
      it_events   = lt_events
    TABLES
      t_outtab    = it_marc.

  "Display ALV Block List
  CALL FUNCTION 'REUSE_ALV_BLOCK_LIST_DISPLAY'.



  "--- Create field catalog helper form
FORM build_fieldcat USING p_table TYPE string
                          p_fieldcat TYPE slis_t_fieldcat_alv.

  DATA ls_fcat TYPE slis_fieldcat_alv.
  CLEAR ls_fcat.

  IF p_table = 'MARA'.
    ls_fcat-fieldname = 'MATNR'. ls_fcat-seltext_m = 'Material'. APPEND ls_fcat TO p_fieldcat.
    ls_fcat-fieldname = 'MTART'. ls_fcat-seltext_m = 'Material Type'. APPEND ls_fcat TO p_fieldcat.
    ls_fcat-fieldname = 'MBRSH'. ls_fcat-seltext_m = 'Industry'. APPEND ls_fcat TO p_fieldcat.
  ELSEIF p_table = 'MARC'.
    ls_fcat-fieldname = 'MATNR'. ls_fcat-seltext_m = 'Material'. APPEND ls_fcat TO p_fieldcat.
    ls_fcat-fieldname = 'WERKS'. ls_fcat-seltext_m = 'Plant'. APPEND ls_fcat TO p_fieldcat.
    ls_fcat-fieldname = 'DISMM'. ls_fcat-seltext_m = 'MRP Type'. APPEND ls_fcat TO p_fieldcat.
  ENDIF.

ENDFORM.

Output:

Types of Reports in SAP ABAP

DPM125 — Sun, 03 Aug 2025 06:59:20 +0000

Reports are a major part of application development used to display data to users. There are three main types of reports:

Classical Reports

Simplest and most basic report type.
Output is in line-by-line format using WRITE statements.
Limited formatting, but supports interactive features like AT LINE-SELECTION.

Used for: Simple lists, master data overviews, basic reporting.

Interactive Reports

Extension of classical reports.
Allows drill-down capability: click on a row to see detailed data (secondary list).
Can have up to 20 secondary lists.

Used for: Master-detail views, like viewing sales orders from a list of customers.

Key event: AT LINE-SELECTION

ALV Reports (ABAP List Viewer)

Provides a powerful, flexible, and interactive table display.
Includes sorting, filtering, exporting, column formatting, etc.
Can be simple ALV, ALV Grid, or ALV with OO (Object-Oriented) approach.

Used for: Complex and user-friendly reporting.

Main function modules/classes: