N.Y. Comp. Codes R. & Regs. tit. 16, § 1000.15 – Acceptance of a certificate.

(a) Upon issuance of a final decision by a board granting a certificate, an applicant shall, within 30 days after the issuance of such decision, file either a written unqualified acceptance of the certificate or a petition for rehearing, but not both.
(b) If a petition for rehearing has been granted, an applicant shall, within 30 days after the issuance of the decision on rehearing, file either a written unqualified acceptance of the certificate (as modified by such decision) or a petition for judicial review, but not both.
(c) If judicial review has been obtained, an applicant shall file a written unqualified acceptance of the certificate within 30 days after either:
1. (1) the expiration of the time for judicial review of the court order:
  1. (i) enforcing the board's decision; or
  2. (ii) modifying the board's decision and enforcing it as so modified; or
2. (2) any final decision by a board upon remand for further specific evidence or findings.
(d) A certificate will be vacated unless an applicant has filed a written acceptance in accordance with subdivision (a), (b) or (c) of this section, as the case may be.
(e) Upon the filing of a written acceptance of a certificate following a final decision on an application, rehearing, judicial review or remittal, as the case may be, a board's jurisdiction with respect to such certificate will cease provided, however, that the permanent board will retain jurisdiction with respect to the amendment, suspension or revocation of the certificate.