Screen numbers greater than 9000 are reserved for SAP customers. Screen numbers 1000 through 1010 are reserved for the maintenance screens of ABAP Dictionary tables and the standard selection screens of reports.
选择屏幕编号范围：1000-1999
录入屏幕编号范围：1－999
子屏幕编号范围：3000－4999
在HR中你只能定义9000以上的屏幕号。