Mass. Gen. Laws ch. 54 § 111
The city or town clerk shall forthwith after each election examine the copies of the records of the election officers, and if any error appears therein, shall forthwith give notice thereof to the officers by whom the error was made, who shall forthwith make an additional record under oath in conformity with the facts and deliver a copy thereof to the city or town clerk. Such copy of the records made, with or without notice as aforesaid, shall be received by the city or town clerk at any time before the last day fixed for the transmission of copies of records of the votes cast in the city or town, or on which the results of the election are required to be declared.
The city or town clerk shall examine all original and all additional copies of the records and make them part of the records of such election, and shall certify and attest copies of the records of votes for the several candidates.
Mass. Gen. Laws ch. 54, § 111