Okla. Admin. Code § 165:35-15-19 – Meter records and reports

(a) General. Current records shall be kept, systematically arranged, of the identification number of each watt-hour meter and the location of the meter.
(b) Selective test date. Any utility authorized to utilize a selective testing program for alternating current watt-hour meters may retain the test date of the groups of lots of the meter selected for test, in lieu of the records required in (c) of this Section.
(c) Test records. Each utility shall keep the most recent test record of any installed meter for the period installed and for six (6) months after the meter is removed from service. Each record shall contain:
1. (1) Sufficient information to identify the meter.
2. (2) The date of the test.
3. (3) Reading of the meter.
4. (4) Results of the test.