The use of object orientated code within SAP has lead to new method of enhancing standard SAP code called Business Add-Ins or BADI's for short. Although the implementation concept is based on classes, methods and inheritance you do not really have to understand this fully to implement a BADI. Simply think of methods as a function module with the same import and export parameters and follow the simple instructions below
Steps:

• 1. Execute Business Add-In(BADI) transaction SE18
• 2. Enter BADI name i.e. HRPBSGB_HESA_NISR and press the display button
• 3. Select menu option Implementation->Create
• 4. Give implementation a name such as Z_HRPBSGB_HESA_NISR
• 5. You can now make any changes you require to the BADI within this implementation, for example choose the Interface tab.
• 6. Double click on the method you want to change, you can now enter any code you require.
• 7. Please note to find out what import and export parameters a method has got return the original BADI definition (i.e. HRPBSGB_HESA_NISR) and double click on the method name for example within HRPBSGB_HESA_NISR contract is a method
• 8. When changes have been made activate the implementation.

Related Items:

• Changing data in MATMAS IDoc
• Defining a BAdI
• Difference Between BADI and Us
• Useful BAdIs