So that is often the case in our professional lives: we are asked to produce something, but the person asking does not have clear idea of what he wants. On top of that, he thinks that you will understand what is looking for anyway, so you can give anything that comes your way.

That does not mean that this is something what we as a professionals has to put up with. So ask your manager for more details. At least he must be able to give you some direction of what he want to be assessed.