I've never thought twice about sending this back to them before on my personal residences or rentals (side note: I accidentally reported buying my last house for waaay more, thinking they were asking for sale price/details on of my rental I purchased :P, so Zillow showed a HUGE discrepancy in the sale price, boosting the always spot on Zestimate...), but I was wondering is there any REQUIREMENT or real perceived benefit to submitting this to them outside of my accidental Zestimate manipulation (which I wouldn't do again, or intentionally)? 

There were some difficulties getting the seller to fix some discrepancies with workmanship on the rehab.

This can lead to discrepancies in the ad when it was posted and the actual offering - they can technically change the offer all the way up until you put in your deposit(though it's a bad business practice to do so). 

I believe the County has considered the garage as Living Area but the appraiser put it under Non-living Area rightfully.The property is built in 1995 and since then is marketed for sale and rent as a 1380 sqft unit based on County records.In this stage, I have done all the cost, income, cash flow, ROI, ... calculations and everything matches my criteria.Should I be worried about this discrepancy between County records and actual measurements in the long term?

Although this one was purchased first, Due to zoning issues as well as flood zone discrepancies, we are behind.

Really the only discrepancy comes when a reservation takes place over two months i.e. 30th-2nd so not sure if it's a big deal or not!

Also, since students are usually paying separately, I’ve never seen such a large discrepancy on price.

Yes, there is a huge discrepancy of wages in Idaho and cost of housing.

Have you guys seen a discrepancy like this in records?

I've obviously already used James Wise guide (https://www.biggerpockets.com/...) but there were some discrepancies in the comments regarding one area, in particular, I was looking into.