Recruiters: what are the biggest mistakes IT contractors are making on their CVs right now?

One of the things I want this Community to do is allow contractors to hear directly from recruiters rather than guessing what happens after an application is submitted.

So this one is specifically for recruiters.

What are the most common CV mistakes you currently see from experienced IT contractors?

Is it:

too much technical detail?

CVs that are far too long?

Poorly explained contract achievements?

Generic profiles that don't match the role?

Too many keywords?

Not enough commercial context?

Something else entirely?

And on the other side, what makes you stop and pay attention to a contractor CV?

Contractors: feel free to ask recruiters follow-up questions underneath their responses.