Local interface with example using parameters.

 1. Goto SE38.

2. Give program name and click on create.

3. Give description and select type executable program.

4. Write code.

REPORT zab_if_sale_delivery.
DATA: lv_erzet TYPE erzet,
      lv_erdat TYPE erdat,
      lv_vbtyp TYPE vbtyp,
      lv_ernam TYPE ernam.
PARAMETERS: p_vbeln TYPE vbeln.
PARAMETERS: p_r1 TYPE c RADIOBUTTON GROUP g1,
            p_r2 TYPE c RADIOBUTTON GROUP g1.

INTERFACE if_sale_del.

  METHODS display
    IMPORTING pvbeln TYPE vbeln
    EXPORTING perzet TYPE erzet
              perdat TYPE erdat
              pvbtyp TYPE vbtyp
              pernam TYPE ernam.
ENDINTERFACE.

CLASS sale DEFINITION.
  PUBLIC SECTION.
    INTERFACES if_sale_del.
ENDCLASS.
CLASS sale IMPLEMENTATION.
  METHOD if_sale_del~display.
    SELECT SINGLE erzet
            erdat
            vbtyp
            ernam
            FROM vbak
            INTO ( perzet,perdat, pvbtyp, pernam )
            WHERE vbeln EQ p_vbeln.
  ENDMETHOD.
ENDCLASS.

CLASS delivery DEFINITION.
  PUBLIC SECTION.
    INTERFACES if_sale_del.

ENDCLASS.
CLASS delivery IMPLEMENTATION.
  METHOD if_sale_del~display.
    SELECT SINGLE erzet
            erdat
            vbtyp
            ernam
            FROM likp
            INTO ( perzet,perdat, pvbtyp, pernam )
            WHERE vbeln EQ p_vbeln.
  ENDMETHOD.
ENDCLASS.

START-OF-SELECTION.
  DATA: obj_sale TYPE REF TO sale,
        obj_del  TYPE REF TO delivery.
  IF p_r1 = 'X'.
    CREATE OBJECT obj_sale.
    obj_sale->if_sale_del~display(
      EXPORTING
        pvbeln = p_vbeln
      IMPORTING
        perzet = lv_erzet
        perdat = lv_erdat
        pvbtyp = lv_vbtyp
        pernam = lv_ernam
    ).
    WRITE: 'Sale order details', / p_vbeln ,
                                / lv_erzet,
                                / lv_erdat,
                                / lv_vbtyp,
                                / lv_ernam.
  ELSEIF p_r2 = 'X'.
    CREATE OBJECT obj_del.
    obj_del->if_sale_del~display(
      EXPORTING
        pvbeln = p_vbeln
      IMPORTING
        perzet = lv_erzet
        perdat = lv_erdat
        pvbtyp = lv_vbtyp
        pernam = lv_ernam
    ).
    WRITE: 'Delivery order details', / p_vbeln ,
                                / lv_erzet,
                                / lv_erdat,
                                / lv_vbtyp,
                                / lv_ernam.

  ENDIF.

Case1-Sale

    * Input

    * Output

    


Case2-Delivery

    * Input

    * Output

****************************Thank you ****************************

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