There is a view, backed by comments from a judge, that the PM is an 'impartial administrator' of the contract "in matters of certification (of payments) and assessment" of CEs.
Consequently, if the PM spotted these errors when evaluating the CE, he or she should have corrected them either by pointing them out to you and instructing a re-quote or making the assessment him/her self. Contractually, I suppose, the PM did not assess your quotation in accordance with the contract.
But, as Dave says below, he just accepted it. Consequently, if you were to take this to a adjudication, you would have to think carefully about the dispute you are referring.
Consequently, if the PM spotted these errors when evaluating the CE, he or she should have corrected them either by pointing them out to you and instructing a re-quote or making the assessment him/her self. Contractually, I suppose, the PM did not assess your quotation in accordance with the contract.
But, as Dave says below, he just accepted it. Consequently, if you were to take this to a adjudication, you would have to think carefully about the dispute you are referring.