An adjudicator does not have power to consider materials supplied by a claimant in its adjudication application which fall outside the ambit or scope of the materials provided in the payment claim. A claimant that raises a new contractual basis or deploys new supporting documentation for the first time in the adjudication application risks an abortive determination, because the respondent will be barred by s 20(2B) from responding to those new matters. However, s 13 does not expressly require a payment claim to include reasons for the claimed entitlement — the consequence of providing insufficient detail is not invalidity of the payment claim but rather the risk that the adjudication will miscarry.
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