https://www.gao.gov/products/135044

B-230379: Feb 12, 1988

A firm protested the Army's rejection of its bid as nonresponsive, contending that the Army should have accepted its late acknowledgement of a solicitation amendment as a bid modification, since its bid was low and otherwise responsive. GAO held that the Army properly rejected the bid, since: (1) it failed to acknowledge the amended delivery date, which was a material change; and (2) acceptance of...

https://www.gao.gov/products/467330

B-230379: Feb 12, 1988

An amendment to the solicitation which alters the delivery date under the contract is material and a bidder's failure to acknowledge such amendment renders its bid nonresponsive. 2. A late acknowledgment of a material amendment may not be accepted as a late modification of an otherwise successful bid since the bid as originally submitted is nonresponsive. S.K. argues that the Army should have waiv...