How does the Contractor notify that the Works Information requires him to do something that is illegal or impossible?

How does the Contractor notify that the Works Information requires him to do something that is illegal or impossible?

Immediately after noticing that the Works Information requires him to do something impossible or illegal, the Contractor gives written notification to the Project Manager of the consideration.
The Project Manager considers the notification and responds within the period of reply.
If he agrees, he gives the Contractor a written instruction changing the Works of Information. This change is also a compensation event
If he disagrees and the Contractor is unhappy about it, the Contractor can take the matter to adjudication.