Agencies shall maintain complete records of all actions taken under this subpart  50.1. For each request for relief processed, these records shall include, as a minimum-

(a) The contractor’s request;

(b) All relevant memorandums, correspondence, affidavits, and other pertinent documents;

(c) The Memorandum of Decision (see 50.103-6 and 50.104-2); and

(d) A copy of the contractual document implementing an approved request.