is there a way to move 2 fields closer together (side by side) on suitelet ? (S2.0)

I know in the UI you can use Same as Previous Row but not sure about suitelet.

You mean you want in same row?

I assumed that side by side meant same row.

yes, side by side, same row, if I add a third field, it jumps line, but only 2 seems very weird as they are both on each side of the screen.

Reduce the width and try

Thanks, in the end I used .updateLayoutType({ layoutType: SERVER_WIDGET.FieldLayoutType.MIDROW }); which seems to do something similar