Layout Change in SAP | How to create Custom Layout in SAP | SAP ALV Grid - Layouts | 

To create a custom layout in SAP, you can follow these steps:
Go to the SAP Easy Access Menu and navigate to the transaction code SE38.
Create a new program or open an existing program that uses the SAP ALV Grid.
In the program code, define the layout you want to create using the SAP ALV Grid Layout object.
Use the ALV Layout object to define the display format, color scheme, column headings, and other visual elements of the layout.
Save the program and execute it to test the layout.
Here is an example code snippet for creating a custom layout in SAP using the SAP ALV Grid:
Once you have created the custom layout in your program, you can save it as a layout variant and reuse it in other programs or transactions. To do this, use the ALV Grid Layout object to create a new layout variant and save it to the SAP database using the SAVE layout variant method. You can then retrieve this layout variant in other programs using the GET layout variant method and apply it to the ALV Grid display.