# 关于使用内部表的时候的一些注意事项

去重的时候一定不要搞错了

```
 SORT LT_FM_ZSV430_EBELP BY EBELN EBELP.
    DELETE ADJACENT DUPLICATES FROM LT_FM_ZSV430_EBELP COMPARING EBELN EBELP.
```

如果有一个Loop后要跟一个append，同时这个Loop要执行多次，那记得要清空内部表。

```
 LOOP AT LT_FM_ZSV430_EBELN INTO LS_FM_ZSV430_EBELN.
        CLEAR LS_T_ZSV430_EBELN.
```


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