You do not have to identify what that something was, but you do have to provide a standard reply of the credit bureau whose report it was and direct the applicant to the bureau's contact information should they want to see if there is something in their report that is incorrect.

But he is obviously incorrect on the lack of disclosure it’s clearly in the rental agreement 

They posture loudly, however drunk or high they are, and this is when you should be calling the police and having them hauled off for trespassing and terroristic threats.If you are not local and are trying to run D-class properties long distance and nicey-nicey, well, thoughts and prayers.

That could open a can of worms and have them make unknown damage to the property behind the walls because the windows were installed incorrectly or they took shortcuts. 

Your last example is incorrect. 

I don't know where the incorrect number came from, but everything else on the PDF was accurate.

they are incorrect on their view of essential services.  

The new landlord will do a better job screening.That could be an incorrect assumption, because the current landlord is probably experienced and in many cases the new landlord is inexperienced.

I attribute this mostly to not purchasing correctly while calculating expenses incorrectly from the start, but that's a topic for another discussion.

It’s not worth the risk/liability of your tenant, or someone else, getting hurt if it were to be installed incorrectly.