BADI lookup method:
(1) by SE, the input CL_EXITHANDLER, and set a breakpoint in the process GET_INSTANCE then run exit_name transaction code determination value, the
operation is as follows:
input by SE, then enter cl_exithandler
Find GET_INSTANCE method, double-click get_instance set breakpoints view exit_name value of:
Example: We are looking PO saving enhancements, which can be used BADI?
Foreground input ME21N, enter the breakpoint, EXIT_NAME = ME_GUI_PO_CUST
F8 ， EXIT_NAME = GOS_SRV_SELECT
F8 ， EXIT_NAME = BADI_LAYER
F8 Next, EXIT_NAME = ME_TAX_FROM_ADDRESS, did not go down BADI has a corresponding step
Or directly test to save time, fill out the data, click Save;
Did not stop in the class CL_EXITHANDLER breakpoint, the reason is: I have to finish, save time to look directly EXIT_NAME, the breakpoint is deleted;
OK to try again, this time to remember step before saving, and then set a breakpoint:
enter the break; the EXIT_NAME = ME_INFOREC_SEND
I then clicked three times F8, get the expected result: EXIT_NAME = ME_PURCHDOC_POSTED
Before so I did not how to take decent with BADI, seniors are looking for advice or look online, it seems, there is a lot of knowledge of
The next step is the
Then run to completion:
Then the way
(2) 通过st05跟踪 找BADI，
badi对应的数据表为 SXS_INTER, SXC_EXIT, SXC_CLASS 和 SXC_ATTR，
而这些表都是通过视图 V_EXT_IMP 和 V_EXT_ACT 来查询的。
1、打开运行事务码: ST05 选择“table buffer trace”而不是常用的"SQL trace"
2、activate trace（开始跟踪）
3、运行事务码：me21n
4、创建一个采购订单，保存
5、deactivate trace（结束跟踪）
6、点击display trace，在出来的选择条件中： objects中输入：V_EXT_IMP和V_EXT_ACT；在 operations中输入“OPEN”
7、查询
通过查询的结果可以看出，视图V_EXT_IMP的BADI的接口类名字都是以IF_EX_开头的，其中IF_EX_之后的就是对应BADI接口的定义。
PO经常用到的BADI： ME_PROCESS_PO_CUST ； ME_PURCHDOC_POSTED
因为 ME_PROCESS_PO 仅能在 SAP 内部实施，如果要使用，要做相应的隐式增强（这个有机会可以研究）
还遇到这个例子，也是仅能内部实施，而且没有 _CUST
这个BADI 勾上仅可SAP内部使用了，我想用这个 有办法吗
这种BADI 直接使用不了，要去查看他有没有实施类，在实施类里做隐式增强
注意：sap的实现类你是不能跳过的，你要看下sap的实施类有没有被调用。然后在增强