What Are the Most Common Documents You See Overlooked in the Sale of a Business?

The most important document, ore one of the most important documents. The there's obviously the share purchase agreement that you're going that yure gong to go through. And what are the most sort of common things you see overlooked in the sale of a business? What are the kind of hidden traps, or hidden sort of things that owners often sort of disregard or forget about?