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...Guidance note on variation orders contract addendums and expiration june project procurement under islamic development bank isdb amendment includes amendments modifications or extensions the beneficiary shall request no objection in relation to any proposed extension modifica tion change order a provides reasons for modification may relate example material of stipulated time performance b agreeing waiver conditions c issuing except cases extreme urgency which would aggregate increase original amount by more than fifteen per cent price need used make changes variations from scope work form an addition substi tution complete omission is alteration works laid out construction such are often caused design initiated continual technological advancement statutory non availability supplies materials some extent vary depends nature complexity goods consulting services being procured one off straightforward purchase unlikely require unless there has been error compared complex infrastructure num...