"In my opinion, a document which purports to be a payment claim does not fail to be a payment claim, within the meaning of the Act, merely because it can be seen, after a full investigation of all the facts and circumstances, not to successfully identify all the construction work for which payment is claimed. This could be the case, for example, if there is some typographical omission or other error in relation to one of the large number of items included in the claim: and the question whether or not the other party, by reason of its knowledge of the project, would have been able to fill in or correct that error could be one depending on a great deal of evidence concerning the circumstances of the case. In my opinion, it is inconceivable that it was the intention of the legislature that the existence of a payment claim under the Act should depend on that kind of consideration.