[1.1] The article makes it clear that no simple or even formal reminder is necessary as it is required, at least under certain circumstances, in some countries (examples given by Tallon/Parker, 7-14) to place the buyer in a situation of delay in payment.

      [1.2] Tallon (Parker, 7-14 fol) raised the question whether renunciation of requests, etc. is an expression of a general principle of the Convention and answered it referring to Honnold (160) in that it should be considered as an exception, whereas in general, performance would have to be requested by a special act. We believe that these two should not be alternatives; what matters is whether the obligated party has all the required information regarding the period for delivery. If this is the case, he will have to act accordingly (in particular Art. 33). Only where he does not have it can information be requested as the condition for performance. Since payments under the contract other than that of the price, e.g. reimbursement of auxiliary costs which do not have to be paid together with the price, and payment of sums from claims for breaches of contract, are not fixed by law and often also not by contract with the exactness necessary for payment, a customary and appropriate information will be required as the condition for payment -- if nothing different results from the circumstances.