- Go to Admin Module
- 3rd section “Field and Layout management” > Click on Manage field.
- Search and select the UDF that you want to delete.
- Click on Edit Option (Pencil Icon) in action column.
- Update window will appear for UDF > Uncheck Associated with current domain.
- Now you can delete the UDF by clicking on red icon in action column.
Please follow the below screenshot for understanding.