High Pricing Error and Reference Price Confusion

I have an open case with support on a High Pricing Error. They responded with the following:

“We tried to fetch the reference price, but we were unable to find the exact product in the competitor sites. Kindly help us by providing the Exact external reference competitor URL/Manufacturer URL (Non Amazon URL), so we can validate and make the necessary changes.”

Can somebody help me understand what they are talking about here? I don’t reference competition outside of Amazon when I build my prices – only the competition on Amazon itself. What are they looking for in order to validate changes?

Thank you all in advance!