MIR7预制发票扣除已经预制的数量（每月多次预制，未即时过账）详解编程语言

ENHANCEMENT 1  ZMIR7_01.    "active version 
DATA:LS_YDRSEG LIKE LINE OF YDRSEG. 
DATA:L_T_QTY LIKE EKBE-MENGE. 
DATA:LY_PRUEFLOS TYPE QPLOS. 
DATA:LY_ART TYPE QPART. 
DATA:LV_INSMK TYPE MSEG-INSMK. 
DATA:lv_BSART TYPE ESART. 
DATA:lv_KNTTP TYPE KNTTP. 
 
CHECK RM08M-VORGANG = '1'. 
 
LOOP AT YDRSEG INTO LS_YDRSEG. 
  L_T_QTY = 0. 
  CLEAR:LY_PRUEFLOS,LV_INSMK,lv_bSART,lv_KNTTP."排除没做出使用决策的物料凭证 
 
  SELECT SINGLE KNTTP INTO LV_KNTTP FROM EKPO WHERE EBELN = LS_YDRSEG-EBELN AND EBELP = LS_YDRSEG-EBELP.. 
    IF LV_KNTTP = 'A' OR LV_KNTTP = 'K' OR LV_KNTTP = 'Z' OR LV_KNTTP = 'F'. 
      ELSE. 
        SELECT SINGLE INSMK INTO LV_INSMK FROM MSEG WHERE MJAHR = LS_YDRSEG-LFGJA 
         AND MBLNR = LS_YDRSEG-LFBNR  AND ZEILE = LS_YDRSEG-LFPOS. 
        IF LV_INSMK = 'X'. 
            SELECT SINGLE ART INTO lY_ART FROM QMAT WHERE ART = '01' AND MATNR = LS_YDRSEG-matnr AND WERKS = LS_YDRSEG-werks. 
              IF sy-subrc = 0. 
                  SELECT SINGLE PRUEFLOS INTO LY_PRUEFLOS 
                    FROM QALS WHERE MJAHR = LS_YDRSEG-LFGJA 
                   AND  MBLNR = LS_YDRSEG-LFBNR  AND ZEILE = LS_YDRSEG-LFPOS AND STAT34 = 'X'. 
                 IF LY_PRUEFLOS IS INITIAL. 
                    DELETE YDRSEG. 
                    CONTINUE. 
                 ENDIF. 
        ENDIF. 
    ENDIF. 
    ENDIF. 
 
 
 
 
  SELECT SUM( CASE SHKZG WHEN 'S' THEN MENGE ELSE -1 * MENGE END ) 
              INTO @L_T_QTY 
              FROM EKBE 
  WHERE EBELN = @LS_YDRSEG-EBELN 
  AND   EBELP = @LS_YDRSEG-EBELP 
  AND   BEWTP IN ('T','Q') 
  AND   LFGJA = @LS_YDRSEG-LFGJA 
  AND   LFBNR = @LS_YDRSEG-LFBNR 
  AND   LFPOS = @LS_YDRSEG-LFPOS. 
 
  SELECT SINGLE bsart INTO lv_bsart FROM ekko WHERE ebeln = LS_YDRSEG-EBELN. 
    IF lv_bsart = '915'. 
      LS_YDRSEG-MENGE = LS_YDRSEG-WEMNG + L_T_QTY. 
      ELSE. 
        LS_YDRSEG-MENGE = LS_YDRSEG-WEMNG - L_T_QTY. 
    ENDIF. 
 
 
  "DELETE 没有使用决策的物料凭证 
  LS_YDRSEG-BPMNG = LS_YDRSEG-MENGE. 
 
  IF LS_YDRSEG-MENGE <= 0. 
    DELETE YDRSEG. 
    CONTINUE. 
    ELSE. 
      MODIFY YDRSEG FROM LS_YDRSEG. 
  ENDIF. 
 
ENDLOOP. 
ENDENHANCEMENT.