2. Select Database Table:

    – Select the radio button “Database table”.

3. Provide Table Name:

    Enter the table name KNA1 (Customer Master).

4. Display Table:

   Click on the “Display” button.

5. Create Append Structure:

     In the application toolbar, click on “Append Structure”.

6. Create New Append:

    Click on the “Create Append” button.

7. Provide Append Structure Name:

   Enter the append structure name ZCUSTOM_FIELDS.

8. Provide Short Description:

   Enter a short description, e.g. “Customer Additional Fields”.

9. Add Components and Component Types:

   Enter the component names and their corresponding data elements. For example:

      COMPONENT: ZZBIRTHDAY

      COMPONENT TYPE: ZZ_BIRTHDAY

10. Create Data Element:

     Double-click on the data element ZZ_BIRTHDAY.

     Click “Yes” to create a new data element.

11. Provide Data Element Description:

    Enter a short description, e.g. “Customer Birthday”.

12. Provide Domain Name:

    Enter the domain name ZZ_BIRTHDAY_DM.

13. Create Domain:

    – Double-click on the domain ZZ_BIRTHDAY_DM.

    – Click “Yes” to create a new domain.

14. Provide Domain Description:

    Enter a short description, e.g. “Birthday Domain”.

15. Define Data Type and Length:

    – Set the data type as DATS (Date).

    – Length is predefined for DATS and does not need to be changed.

16. Save, Check and Activate Domain:

    Save the domain.

    Check for errors.

    Activate the domain.

17. Return to Data Element:

    Click on “Back” to return to the data element screen.

18. Save, Check and Activate Data Element:

    Save the data element.

    Check for errors.

    Activate the data element.

19. Return to Append Structure:

    Click on “Back” to return to the append structure screen.

20. Repeat for Additional Fields:

    Follow the same steps to create additional fields. For example:

    Field Name: ZZ_GENDER

      Data Element: ZZ_GENDER

      Domain: ZZ_GENDER_DM

      Data Type: CHAR

      Length: 1

21. Save, Check and Activate Append Structure:

    Save the append structure.

    Check for errors.

    Activate the append structure.

22. Review the Updated Structure:

   The append structure in KNA1 should now include the additional fields.

Example Fields in KNA1

ZZBIRTHDAY: Customer Birthday (DATS)

ZZ_GENDER: Gender (CHAR, Length 1)

This process can be repeated for any standard table in SAP to add custom fields using the append structure. Ensure that each new field has a unique component name and that the corresponding data elements and domains are properly defined and activated.