204 CMR, § 9.07
The licensee shall record, for each keg sale, the date of sale, size of keg, keg identification number, amount of container fee and registration fee, and name and address of the purchaser. The purchaser shall sign a statement at the time of purchase attesting under penalty of perjury to the accuracy of the purchaser's name and address shown, and acknowledging that misuse of the keg or its contents may result in civil liability, criminal prosecution or both. The licensee shall record the date and amount of each container and registration fee refund.
The records shall be kept by the licensee for not less than three years from date of making. The Commission may prescribe a form or forms for use in recording the information required by 204 CMR 9.00.
204 CMR, § 9.07