Sec. 11. (a) The purchasing agency may establish policies to allow any of the following:
(1) Correction or withdrawal of inadvertently erroneous bids before or after an award.
(2) Cancellation of awards or contracts based on a mistake described in subdivision (1).
(b) Except as provided in a rule or policy, a purchasing agency must make a written decision to:
(1) permit the correction or withdrawal of a bid; or
(2) cancel awards or contracts based on bid mistakes.