SAP销售订单状态修改(审核) 计划行自动产生需求，产生MD04需求

不知道业务怎么配置的，创建销售单时，一堆计划行类别，什么CN,DN。。。都有，但是审核后需要计划行变更为CP，这样在MD04才能看到需求。

原有逻辑是弄个后台程序，审核后调一下，更新一下计划行，这样是会有需求的。。。

但是，业务有个习惯喜欢VA02直接审，或者是交货后还来修改等等。。。这时候就需要在VA02里做增强。，

原本的开发还是调程序。。。这就产生了很多问题。后来我自己写增强审核的时候自动修改计划行类别，巴特，不产生需求。。。这特么鬼，后来各种找，各种DEBUG，找到根源了。。。

Now，来个增强，实现：MV45AFZZ  USEREXIT_SAVE_DOCUMENT_PREPARE

IF ( i_stonO = '20' AND i_stonN = '30' ).
       LOOP AT XVBEP INTO GX_VBEP.
         LY_I = SY-TABIX.
         CASE VBAK-AUART.
             WHEN 'ZOR' .
            IF GX_VBEP-ETTYP <> 'CP' AND GX_VBEP-ETTYP <> 'ZD'.
              GX_VBEP-ETTYP = 'CP'.
              IF SY-TCODE = 'VA01'.
                ELSEIF SY-TCODE = 'VA02'.
                  GX_VBEP-UPDKZ = 'U'.
                  GX_VBEP-BEDSD = 'X'.
                  GX_VBEP-BDAALT = '05'.
                  GX_VBEP-BDART = '05'.
                  GX_VBEP-PLART = '0'.
                  IF XVBBE[] IS INITIAL.
                    GW_VBBE-MANDT = SY-MANDT.
                    GW_VBBE-VBELN = GX_VBEP-VBELN.
                    GW_VBBE-POSNR = GX_VBEP-POSNR.
                    GW_VBBE-ETENR = GX_VBEP-ETENR.
                    GW_VBBE-MBDAT = GX_VBEP-EDATU.
                    GW_VBBE-VBTYP = 'C'.
                    GW_VBBE-BDART = '05'.
                    GW_VBBE-PLART = '0'.
                    GW_VBBE-UPDKZ = 'I'.
                    GW_VBBE-OMENG = GX_VBEP-LMENG.
                    GW_VBBE-VMENG = GX_VBEP-BMENG.
                    GW_VBBE-MEINS = GX_VBEP-VRKME.
                    GW_VBBE-PZMNG = GX_VBEP-LMENG.
                    GW_VBBE-AUART = XVBAK-AUART.
                    GW_VBBE-KUNNR = XVBAK-KUNNR.
                     READ TABLE XVBAP INTO GX_VBAP WITH KEY POSNR = GX_VBEP-POSNR.
                     IF SY-SUBRC = 0.
                       LY_J = SY-TABIX.
                       GX_VBAP-SUMBD = 'A'.
                       GX_VBAP-UPDKZ = 'U'.
                       GX_VBAP-BEDUP = 'X'.

                       MODIFY XVBAP FROM GX_VBAP INDEX LY_J TRANSPORTING SUMBD UPDKZ BEDUP.
                      GW_VBBE-MATNR = GX_VBAP-MATNR.
                      GW_VBBE-WERKS = GX_VBAP-WERKS.
                      GW_VBBE-LGORT = GX_VBAP-LGORT.
                      GW_VBBE-CHARG = GX_VBAP-CHARG.
                      GW_VBBE-AWAHR = GX_VBAP-AWAHR.
                      GW_VBBE-VPZUO = GX_VBAP-VPZUO.
                     ENDIF.
                     INSERT GW_VBBE INTO XVBBE INDEX GX_VBEP-ETENR.
                  ENDIF.
              ENDIF.
            ENDIF.
          WHEN 'ZKB' .
            IF GX_VBEP-ETTYP <> 'E1'.
              GX_VBEP-ETTYP = 'E1'.
              IF SY-TCODE = 'VA01'.
                ELSEIF SY-TCODE = 'VA02'.
                  GX_VBEP-UPDKZ = 'U'.
                  GX_VBEP-BEDSD = 'X'.
                  GX_VBEP-BDAALT = '05'.
                  GX_VBEP-BDART = '05'.
                  GX_VBEP-PLART = '0'.
                  IF XVBBE[] IS INITIAL.
                    GW_VBBE-MANDT = SY-MANDT.
                    GW_VBBE-VBELN = GX_VBEP-VBELN.
                    GW_VBBE-POSNR = GX_VBEP-POSNR.
                    GW_VBBE-ETENR = GX_VBEP-ETENR.
                    GW_VBBE-MBDAT = GX_VBEP-EDATU.
                    GW_VBBE-VBTYP = 'C'.
                    GW_VBBE-BDART = '05'.
                    GW_VBBE-PLART = '0'.
                    GW_VBBE-UPDKZ = 'I'.
                    GW_VBBE-OMENG = GX_VBEP-LMENG.
                    GW_VBBE-VMENG = GX_VBEP-BMENG.
                    GW_VBBE-MEINS = GX_VBEP-VRKME.
                    GW_VBBE-PZMNG = GX_VBEP-LMENG.
                    GW_VBBE-AUART = XVBAK-AUART.
                    GW_VBBE-KUNNR = XVBAK-KUNNR.
                     READ TABLE XVBAP INTO GX_VBAP WITH KEY POSNR = GX_VBEP-POSNR.
                     IF SY-SUBRC = 0.
                       LY_J = SY-TABIX.
                       GX_VBAP-SUMBD = 'A'.
                       GX_VBAP-UPDKZ = 'U'.
                       GX_VBAP-BEDUP = 'X'.

                       MODIFY XVBAP FROM GX_VBAP INDEX LY_J TRANSPORTING SUMBD UPDKZ BEDUP.
                      GW_VBBE-MATNR = GX_VBAP-MATNR.
                      GW_VBBE-WERKS = GX_VBAP-WERKS.
                      GW_VBBE-LGORT = GX_VBAP-LGORT.
                      GW_VBBE-CHARG = GX_VBAP-CHARG.
                      GW_VBBE-AWAHR = GX_VBAP-AWAHR.
                      GW_VBBE-VPZUO = GX_VBAP-VPZUO.
                     ENDIF.
                     INSERT GW_VBBE INTO XVBBE INDEX GX_VBEP-ETENR.
                  ENDIF.
              ENDIF.
            ENDIF.
             WHEN 'ZSP' .
            READ TABLE XVBAP INTO GX_VBAP WITH KEY POSNR = GX_VBEP-POSNR.
            IF SY-SUBRC = 0.
              IF GX_VBAP-PSTYV = 'ZSNN' AND GX_VBEP-ETTYP <> 'ZN'.
                GX_VBEP-ETTYP = 'ZN'.
                IF SY-TCODE = 'VA01'.
                ELSEIF SY-TCODE = 'VA02'.
                  GX_VBEP-UPDKZ = 'U'.
                  GX_VBEP-BEDSD = 'X'.
                  GX_VBEP-BDAALT = '05'.
                  GX_VBEP-BDART = '05'.
                  GX_VBEP-PLART = '0'.
                  IF XVBBE[] IS INITIAL.
                    GW_VBBE-MANDT = SY-MANDT.
                    GW_VBBE-VBELN = GX_VBEP-VBELN.
                    GW_VBBE-POSNR = GX_VBEP-POSNR.
                    GW_VBBE-ETENR = GX_VBEP-ETENR.
                    GW_VBBE-MBDAT = GX_VBEP-EDATU.
                    GW_VBBE-VBTYP = 'C'.
                    GW_VBBE-BDART = '05'.
                    GW_VBBE-PLART = '0'.
                    GW_VBBE-UPDKZ = 'I'.
                    GW_VBBE-OMENG = GX_VBEP-LMENG.
                    GW_VBBE-VMENG = GX_VBEP-BMENG.
                    GW_VBBE-MEINS = GX_VBEP-VRKME.
                    GW_VBBE-PZMNG = GX_VBEP-LMENG.
                    GW_VBBE-AUART = XVBAK-AUART.
                    GW_VBBE-KUNNR = XVBAK-KUNNR.
                     READ TABLE XVBAP INTO GX_VBAP WITH KEY POSNR = GX_VBEP-POSNR.
                     IF SY-SUBRC = 0.
                       LY_J = SY-TABIX.
                       GX_VBAP-SUMBD = 'A'.
                       GX_VBAP-UPDKZ = 'U'.
                       GX_VBAP-BEDUP = 'X'.

                       MODIFY XVBAP FROM GX_VBAP INDEX LY_J TRANSPORTING SUMBD UPDKZ BEDUP.
                      GW_VBBE-MATNR = GX_VBAP-MATNR.
                      GW_VBBE-WERKS = GX_VBAP-WERKS.
                      GW_VBBE-LGORT = GX_VBAP-LGORT.
                      GW_VBBE-CHARG = GX_VBAP-CHARG.
                      GW_VBBE-AWAHR = GX_VBAP-AWAHR.
                      GW_VBBE-VPZUO = GX_VBAP-VPZUO.
                     ENDIF.
                     INSERT GW_VBBE INTO XVBBE INDEX GX_VBEP-ETENR.
                  ENDIF.
              ENDIF.
              ELSEIF GX_VBAP-PSTYV = 'ZSAN' AND GX_VBEP-ETTYP <> 'CP'.
                GX_VBEP-ETTYP = 'CP'.
                IF SY-TCODE = 'VA01'.
                ELSEIF SY-TCODE = 'VA02'.
                  GX_VBEP-UPDKZ = 'U'.
                  GX_VBEP-BEDSD = 'X'.
                  GX_VBEP-BDAALT = '05'.
                  GX_VBEP-BDART = '05'.
                  GX_VBEP-PLART = '0'.
                  IF XVBBE[] IS INITIAL.
                    GW_VBBE-MANDT = SY-MANDT.
                    GW_VBBE-VBELN = GX_VBEP-VBELN.
                    GW_VBBE-POSNR = GX_VBEP-POSNR.
                    GW_VBBE-ETENR = GX_VBEP-ETENR.
                    GW_VBBE-MBDAT = GX_VBEP-EDATU.
                    GW_VBBE-VBTYP = 'C'.
                    GW_VBBE-BDART = '05'.
                    GW_VBBE-PLART = '0'.
                    GW_VBBE-UPDKZ = 'I'.
                    GW_VBBE-OMENG = GX_VBEP-LMENG.
                    GW_VBBE-VMENG = GX_VBEP-BMENG.
                    GW_VBBE-MEINS = GX_VBEP-VRKME.
                    GW_VBBE-PZMNG = GX_VBEP-LMENG.
                    GW_VBBE-AUART = XVBAK-AUART.
                    GW_VBBE-KUNNR = XVBAK-KUNNR.
                     READ TABLE XVBAP INTO GX_VBAP WITH KEY POSNR = GX_VBEP-POSNR.
                     IF SY-SUBRC = 0.
                       LY_J = SY-TABIX.
                       GX_VBAP-SUMBD = 'A'.
                       GX_VBAP-UPDKZ = 'U'.
                       GX_VBAP-BEDUP = 'X'.

                       MODIFY XVBAP FROM GX_VBAP INDEX LY_J TRANSPORTING SUMBD UPDKZ BEDUP.
                      GW_VBBE-MATNR = GX_VBAP-MATNR.
                      GW_VBBE-WERKS = GX_VBAP-WERKS.
                      GW_VBBE-LGORT = GX_VBAP-LGORT.
                      GW_VBBE-CHARG = GX_VBAP-CHARG.
                      GW_VBBE-AWAHR = GX_VBAP-AWAHR.
                      GW_VBBE-VPZUO = GX_VBAP-VPZUO.
                     ENDIF.
                     INSERT GW_VBBE INTO XVBBE INDEX GX_VBEP-ETENR.
                  ENDIF.
              ENDIF.
              ENDIF .
            ENDIF.
             WHEN OTHERS.
         ENDCASE.
         MODIFY XVBEP FROM GX_VBEP.
       ENDLOOP.
     ENDIF.