WB2_READ_DOCU_HEADER_SINGLE SAP Function module - Trading Contract: Read Document Header

WB2_READ_DOCU_HEADER_SINGLE 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 WB2_READ_DOCU_HEADER_SINGLE into the relevant SAP transaction such as SE37 or SE80.

Associated Function Group: WB2B
Released Date: Not Released
Processing type: Normal fucntion module

Pattern for FM WB2_READ_DOCU_HEADER_SINGLE - WB2 READ DOCU HEADER SINGLE

CALL FUNCTION 'WB2_READ_DOCU_HEADER_SINGLE' "Trading Contract: Read Document Header
  EXPORTING
    i_tkonn =                   " wbhk-tkonn
*   i_bypassing_buffer =        " c
*   i_refresh_buffer =          " c
  IMPORTING
    e_komwbhk =                 " komwbhk
  EXCEPTIONS
    NO_RECORD_FOUND = 1         "
    .  "  WB2_READ_DOCU_HEADER_SINGLE

ABAP code example for Function Module WB2_READ_DOCU_HEADER_SINGLE

The ABAP code below is a full code listing to execute function module WB2_READ_DOCU_HEADER_SINGLE 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:
ld_e_komwbhk  
 
 TYPE KOMWBHK
.

 

SELECT single TKONN 
  FROM WBHK 
  INTO @DATA(ld_i_tkonn).


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

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

CALL FUNCTION 'WB2_READ_DOCU_HEADER_SINGLE'
  EXPORTING
    i_tkonn =                    ld_i_tkonn
*   i_bypassing_buffer =         ld_i_bypassing_buffer
*   i_refresh_buffer =           ld_i_refresh_buffer
  IMPORTING
    e_komwbhk =                  ld_e_komwbhk
  EXCEPTIONS
    NO_RECORD_FOUND =            1
    .  "  WB2_READ_DOCU_HEADER_SINGLE

IF SY-SUBRC EQ 0.
  "All OK
ELSEIF SY-SUBRC EQ 1. "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_e_komwbhk
 
 TYPE KOMWBHK ,
ld_i_tkonn
 
 TYPE WBHK-TKONN ,
ld_i_bypassing_buffer
 
 TYPE C ,
ld_i_refresh_buffer
 
 TYPE C .



SELECT single TKONN 
  FROM WBHK 
  INTO ld_i_tkonn.

ld_i_bypassing_buffer = 'Check type of data required'.
ld_i_refresh_buffer = 'Check type of data required'.