Carol - I think the "official" word from the SXM Government is that the form is mandatory to fill out the form prior to traveling.
The first screenshot is from AirTransat app for our next trip in the documents required section. The other screenshot is from SXM Government link on the AirTransat app.

Attached Images
Screenshot_20250522_120107_Air Transat.jpg Screenshot_20250522_120010_Chrome.jpg