用SBOOK测试的时候发现没数据，去spfli看了下，确实没有，就用
BC_DATA_GEN 生成了些。
T-code：BC_DATA_GEN
选项截图，然后点执行就行了，完了再去SPFLI等表看，已经有数据了
The standard utility provided by SAP is a standard program called, 'SAPBC_DATA_GENERATOR', which can also be accessed through the standard transaction 'BC_DATA_GEN’.
On the selection screen we can see that there are three radio buttons that are in 'Enabled' mode and two are in 'Disabled' mode. This is due to the way we run this utility. Although we can run this utility in foreground mode using enabled radio buttons, it is advisable that this should be run in background mode. The reason for the same is creation of mass records. The disabled radio buttons can only be run in background mode. There are standard variants available for the same.
