Place button adjacent to a text field

The best you can achieve based on your screenshot would be to have the Case ID field in the firstColumnContents:{} of your section and then have the button in the secondaryButtons:{} config of your buttonLayout() in the secondColumnContents:{} of your section.

@akhilt Hi, attached (code snippet and image) is one of the ways to achieve your requirement and as per my experience, I don't think there isn't a clean or better way to accomplish your requirement.

SAIL Interface code snippet.txt

Adjust your form layout and go with the approach mentioned by above comments...