在“黄皮书”中，由于设计由承包商负责，那么，相应地，发现并通知错误的责任在业主或工程师。
要证明承包商在发现错误后没有通知业主可能是一件很难的事情，但是，承包商需要注意，不管怎样，这违反了业主的要求，可能导致业主的索赔。尽管此条款证明难度比较大，或者说承包商也没有义务一定要注意到某些错误。在实际工作，如果就这些问题纠缠不清，不一定对承包商有利。另外，如果一方认为有错误，而另一方不认为是错误，这也容易发证争执。
FIDIC此条款有待商榷，因为很容易导致混乱，和实际操作的困难。
1.9
延误的图纸或指令
/Delayed Drawings or Instructions
（
RB
）
The contractor shall give notice to the Engineer whenever the Works are likely to be delayed or disrupted if any necessary drawing or instruction is not issued to the contractor within a particular time, which shall be reasonable. The notice shall include details of the necessary drawing or instruction, details of why and by when it should be issued, and details of the nature and amount of the delay or disruption likely to be suffered if it is late.
