Documentation Word of Caution

I may just have a bad reviewer, but I wanted to warn people starting the process so they don't end up in the same situation as myself. For this credit we provided the required spreadsheet with all the applicable information and cut sheets for at least 20% of the items (we did 100% just be to sure) as is stated here and just about everywhere else. It appears this is insufficient for some reviewers. This was the comment I received back from the reviewer: "TECHNICAL ADVICE: Please provide documentation confirming the products listed above have been manufactured within 500 miles of the project site. Provide an affidavit from the manufacturer stating that the product was manufactured within 500 miles of the project site. Alternatively, provide supporting documentation such as a map with a 500 mile radius around the project site, showing the locations of manufacture stated in the provided documentation are within 500 miles of the project site." This is the first I've heard of an affidavit being required and personnally, I'm not sure what the difference between a spec sheet stating our item is manufacturered in X city with the distance calculated in the official spreadsheet and a map showing the same thing is, but so it goes.