MG_GET_FOR_CLASSES SAP Function module

MG_GET_FOR_CLASSES is a standard SAP function module available within R/3 SAP systems depending on your version and release level. Below is the pattern details for this FM showing its interface including any import and export parameters, exceptions etc as well as any documentation contributions (Comments) specific to the object.

See here to view full function module documentation and code listing, simply by entering the name MG_GET_FOR_CLASSES into the relevant SAP transaction such as SE37 or SE80.

Associated Function Group: WWGR
Released Date: Not Released
Processing type: Normal fucntion module

Pattern for FM MG_GET_FOR_CLASSES - MG GET FOR CLASSES

CALL FUNCTION 'MG_GET_FOR_CLASSES' "
* EXPORTING
*   i_klart = '026'             " klah-klart
*   i_klasse = ' '              " klah-class    Material group code; If space, then all of them
*   i_langu = SY-LANGU          " sy-langu      Transfer lang., default current system value
  TABLES
    o_hier =                    " wghier1       OUTPUT: Hierarchy table
  EXCEPTIONS
    NO_LOWER_CLASSES = 1        "               No material group found for this entry
    NO_CLASS_FOUND = 2          "               No material group hierarchy Found for this MG
    .  "  MG_GET_FOR_CLASSES

ABAP code example for Function Module MG_GET_FOR_CLASSES

The ABAP code below is a full code listing to execute function module MG_GET_FOR_CLASSES including all data declarations. The code uses the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the original method of declaring data variables up front. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8).

DATA:
it_o_hier  
 
 TYPE STANDARD TABLE OF WGHIER1,"TABLES PARAM
wa_o_hier
 
 LIKE LINE OF it_o_hier
.

 

SELECT single KLART 
  FROM KLAH 
  INTO @DATA(ld_i_klart).

 

SELECT single CLASS 
  FROM KLAH 
  INTO @DATA(ld_i_klasse).


DATA(ld_i_langu) = 'Check type of data required'.
 

"populate fields of struture and append to itab
append wa_o_hier to it_o_hier.
.

CALL FUNCTION 'MG_GET_FOR_CLASSES'
* EXPORTING
*   i_klart =                    ld_i_klart
*   i_klasse =                   ld_i_klasse
*   i_langu =                    ld_i_langu
  TABLES
    o_hier =                     it_o_hier
  EXCEPTIONS
    NO_LOWER_CLASSES =           1
    NO_CLASS_FOUND =             2
    .  "  MG_GET_FOR_CLASSES

IF SY-SUBRC EQ 0.
  "All OK
ELSEIF SY-SUBRC EQ 1. "Exception
  "Add code for exception here
ELSEIF SY-SUBRC EQ 2. "Exception
  "Add code for exception here
ENDIF.

ABAP code to compare 7.40 inline data declaration with original syntax

The below ABAP code uses the older none in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. It may also be useful if you are using an older version of SAP as some of the newer syntax above, such as the @DATA is not available until 4.70 EHP 8.

DATA:

ld_i_klart
 
 TYPE KLAH-KLART ,
it_o_hier
 
 TYPE STANDARD TABLE OF WGHIER1 ,
wa_o_hier
 
 LIKE LINE OF it_o_hier,
ld_i_klasse
 
 TYPE KLAH-CLASS ,
ld_i_langu
 
 TYPE SY-LANGU .



SELECT single KLART 
  FROM KLAH 
  INTO ld_i_klart.
 

"populate fields of struture and append to itab
append wa_o_hier to it_o_hier.

SELECT single CLASS 
  FROM KLAH 
  INTO ld_i_klasse.

ld_i_langu = 'Check type of data required'.