Code: Alles auswählen.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
     EXPORTING
       i_structure_name             = p_tabnam
      CHANGING
        ct_fieldcat                  = gt_fieldcat
              .
  FIELD-SYMBOLS: <fieldcatalog> LIKE LINE OF gt_fieldcat.
  LOOP AT gt_fieldcat ASSIGNING <fieldcatalog> WHERE fieldname = 'MANDT'.
    <fieldcatalog>-tech = ''.
  ENDLOOP.
  CALL METHOD gr_alv->set_table_for_first_display
        EXPORTING
          i_structure_name              = p_tabnam
        CHANGING
          it_outtab                     = lt_outtab
          it_fieldcatalog               = gt_fieldcat
.
Code: Alles auswählen.
CALL METHOD gr_alv->set_table_for_first_display
        EXPORTING
          i_structure_name              = p_tabnam
        CHANGING
          it_outtab                     = lt_outtab
          it_fieldcatalog               = gt_fieldcat
.