From the consulate in New York:

Applications will be canceled in 2 Important cases:

1. You reside outside the jurisdiction of the Consulate General in New York.

Royal Thai Consulate General, New York's Jurisdiction

(Connecticut, New York, New Jersey, New Hampshire, Maine, Massachusetts, Ohio, Pennsylvania, Rhode Island and Vermont)

2. You have filled in incomplete or incorrect personal information.

All personal information that you filled out is shown on your visa document.

Must be correct according to the passport