N.J. Stat. § 43:15A-60.2
If, following application by a member of the retirement system to purchase credit therein under any provision of P.L. 1954, c.84 (C.43:15A-1 et seq.), as amended and supplemented, the member attains qualification as a veteran member pursuant to the enactment of a law, the adoption of a rule or regulation, the revision of an administrative interpretation or application of such a rule or regulation, or any other official act, the member shall be permitted, upon written application to the retirement system within two years following the effective date of that law, rule, regulation, revision, or other act or within two years of the effective date of P.L. 1995, c.406 (C.43:15A-60.2 et al.), whichever is later, to terminate any remaining obligation to complete the purchase and to receive a return of all contributions deducted or other payments made on or after the effective date of the law, rule, regulation, revision, or other act in connection with the purchase. If any service has been credited under the retirement system to the member in connection with the purchase, the amount of that service so credited shall be reduced in proportion to the return to the member hereunder of any contributions or other payments.
N.J.S. § 43:15A-60.2