the issue of misrepresentation in contract?

Answer 1

You're going to have to be more specific. Negligent misrepresentation is a tort in Anglo-American common law – i.e. if someone could reasonably rely on you due to your expertise, and doing so leads to a loss, you could be held liable.

In contract, though, it would depend on the situation. Contractors are strictly liable to carry out their obligations. So if you overestimated your ability to get something done (i.e. Transfer 1 million widgets to some company), and cannot do it, it is just a simple breach of contract.