无意中发现有个程序用IMPORT mdtbx FROM DATABASE mdtc(ar) ID mdkp-dtnum取MRP清单的时候，发现如果一个工厂对应多种MRP区域的时候，取不到另外MRP区域的数据，
但是用函数MD_STOCK_REQUIREMENTS_LIST_API可以取到，经深入分析得知这两种取法的区别：
用语句IMPORT mdtbx FROM DATABASE mdtc(ar) ID mdkp-dtnum取的是上一次MRP运行过后的结果，这个是静态的结果（也就是事物码MD05的结果）。
用函数MD_STOCK_REQUIREMENTS_LIST_API取得是实时的MRP的结果，这个是动态的结果（也就是事物码MD04的结果），此种方法可以区别MRP区域，如果不输入MRP区域
的话，就是默认为一个工厂所有MRP区域所有的结果，如果想取静态的其他MRP区域的结果的话，可以使用下面的代码：
代码语言：javascript复制REPORT ZMRPTABLE.
TABLES: MDKP, "Header Data for MRP Document
MDTB, "MRP table
MDTC, "Aggregated MRP table items
T457T. "Description of MRP elements
DATA: BEGIN OF MDTBX OCCURS 0.
INCLUDE STRUCTURE MDTB.
DATA: END OF MDTBX.
SELECT-OPTIONS: PLANT FOR MDKP-PLWRK OBLIGATORY,
MATNR FOR MDKP-MATNR OBLIGATORY.
* 默认工厂和MRP区域一样的情况
CLEAR: MDKP, MDTB.
SELECT * FROM MDKP WHERE DTART EQ 'MD'
AND MATNR IN MATNR
AND PLWRK IN PLANT.
WRITE:/ MDKP-MATNR, MDKP-PLWRK.
IF MDKP-CFLAG EQ 'X'.
CLEAR MDTBX. REFRESH MDTBX.
IMPORT MDTBX FROM DATABASE MDTC(AR) ID MDKP-DTNUM.
LOOP AT MDTBX.
MOVE MDTBX TO MDTB.
SELECT SINGLE * FROM T457T WHERE SPRAS = 'E'
AND DELKZ = MDTB-DELKZ.
IF MDTB-PLUMI = '-'. MULTIPLY MDTB-MNG01 BY -1. ENDIF.
WRITE:/ MDTB-DAT00, T457T-DELB1, MDTB-VSTAT,
MDTB-MNG01, MDTB-LGORT.
ENDLOOP.
ELSE.
SELECT * FROM MDTB
WHERE DTNUM EQ MDKP-DTNUM
ORDER BY PRIMARY KEY.
SELECT SINGLE * FROM T457T WHERE SPRAS = 'E'
AND DELKZ = MDTB-DELKZ.
IF MDTB-PLUMI = '-'. MULTIPLY MDTB-MNG01 BY -1. ENDIF.
WRITE:/ MDTB-DAT00, T457T-DELB1, MDTB-VSTAT,
MDTB-MNG01, MDTB-LGORT.
ENDSELECT.
ENDIF.
ENDSELECT.
* 默认工厂和MRP区域不一样的情况
CLEAR: MDKPDB, MDTB.
SELECT * FROM MDKPDB WHERE DTART EQ 'MD'
AND MATNR IN MATNR
AND PLWRK IN PLANT.
WRITE:/ MDKPDB-MATNR, MDKPDB-PLWRK.
IF MDKP-CFLAG EQ 'X'.
CLEAR MDTBX. REFRESH MDTBX.
IMPORT MDTBX FROM DATABASE MDTC(AR) ID MDKPDB-DTNUM.
LOOP AT MDTBX.
MOVE MDTBX TO MDTB.
SELECT SINGLE * FROM T457T WHERE SPRAS = 'E'
AND DELKZ = MDTB-DELKZ.
IF MDTB-PLUMI = '-'. MULTIPLY MDTB-MNG01 BY -1. ENDIF.
WRITE:/ MDTB-DAT00, T457T-DELB1, MDTB-VSTAT,
MDTB-MNG01, MDTB-LGORT.
ENDLOOP.
ELSE.
SELECT * FROM MDTB
WHERE DTNUM EQ MDKPDB-DTNUM
ORDER BY PRIMARY KEY.
SELECT SINGLE * FROM T457T WHERE SPRAS = 'E'
AND DELKZ = MDTB-DELKZ.
IF MDTB-PLUMI = '-'. MULTIPLY MDTB-MNG01 BY -1. ENDIF.
WRITE:/ MDTB-DAT00, T457T-DELB1, MDTB-VSTAT,
MDTB-MNG01, MDTB-LGORT.
ENDSELECT.
ENDIF.
ENDSELECT.
