买方卖方关头才可以，如果要求的付款，并未提供所有留置权和索赔有关的工作令人满意的版本。
Buyer may withhold payment until Seller, if requested, has furnished satisfactory releases of all liens and claims relating to the Work.
合伙人无权冲抵应付买方的任何款项，除非其要求没有争议或者被确定合法有效。上述规定同样适用于合同附加的任何保留权（留置权）。
The Partner shall not be entitled to offset any amounts against the Purchaser unless his claim is undisputed or established as legally valid.
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