User exit and customer exit in SAP ABAP -015

SAP ABAP User exits and customer exits in -015

What is customer exit ？

The customer export is SAP In many standard procedures 、 Screens and menus “ hook ”, Customers can use these programs 、 On the screen and in the menu “ Hang up ” Customize functions to meet business needs . More on this later …

In this tutorial , You will learn ：

• Type of customer exit
• Customer exit example
• Find the customer exit
• Create a customer exit
• What is a user exit ？

Type of customer exit

There are three main types of customer exits ：

1. Function module exits
2. The screen exits
3. Menu exit

Function module exits ： Allow customers to pass SAP Add code to function modules at specific locations in the application

Syntax: CALL CUSTOMER-FUNCTION '004'

The screen exits ： It allows customers to add fields to... Through sub screens SAP Screen in program . The sub screen calls... In the flow logic of the standard screen .

Format: CALL CUSTOMER-SUBSCREEN CUSTSCR2

Menu exit ： It allows customers to add items to the standard SAP In the drop-down menu of the program . These items can be used to invoke add in programs or customize screens .

Format: +CUS ( additional item in GUI status )

Customer exit example

Screen exit example ：

In trade CAT2 – Schedule input ,HR Want to include an interactive confirmation , That is, deliberately submitting incorrect data is the reason for dismissal .

Menu exit example ：

In the transaction SE38 – ABAP Editor , The development team wants to include a pointing transaction SE80 – Menu links for the object navigator , For ease of use .

before

after

Function module exit example ：

The company wants the supplier's bank details to become mandatory during supplier creation . therefore , It must flash an error message ,“ Please enter bank details ”

before

after

Find the customer exit

In trade SMOD in , Check the details -

Or in business SE81 in , You can use the corresponding application area

Create a customer exit

To create a customer exit , You need to start with the transaction CMOD Create a project

later , You will “ Customer export ” Items assigned to you .

What is a user exit ？

The purpose of user export is the same as that of customer export , But they only apply to SD modular . Exit is implemented as a call to a function module . The code is written by the developer .

as everyone knows ,SD The user exit in is MV45AFZZ

• USEREXIT_FIELD_MODIFICATION – Modify screen properties
• USEREXIT_SAVE_DOCUMENT – Click... On the user “ preservation ” Perform the operation when
• USEREXIT_SAVE_DOCUMENT_PREPARE
• USEREXIT_MOVE_FIELD_TO_VBAK – When user header changes are moved to the header workspace .
• USEREXIT_MOVE_FIELD_TO_VBAP – When user item changes are moved to SAP Item workspace