F4IF_INT_TABLE_VALUE_REQUEST mehrere Felder auf SOP updaten

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FORM wertehilfe_matnr  USING p_matnr
                             p_werks.

  SELECT * FROM prst AS a INNER JOIN makt AS b
    ON a~matnr = b~matnr
    INTO CORRESPONDING FIELDS OF TABLE it_valuetab_output
    WHERE a~pspnr = fl_pspnr
    AND   b~spras = sy-langu.

  IF sy-subrc EQ 0.
    CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
      EXPORTING
        retfield        = 'MATNR'
        DYNPNR          = sy-dynnr
        value_org       = 'S'
      TABLES
        value_tab       = it_valuetab_output
        return_tab      = it_return
      EXCEPTIONS
        parameter_error = 1
        no_values_found = 2
        OTHERS          = 3.
    IF sy-subrc EQ 0.
      break jhaase.
      LOOP AT it_return.
        move it_return-FIELDVAL to p_matnr.
      ENDLOOP.
    ENDIF.
  ELSE.
...
 ENDIF.
ENDFORM.