Index/Match returning invalid data

I am trying to match the address columns from two different sheets, and pull the distance from one of them and add it to the other where the two addresses match. I am getting a invalid matches where a value is returned yet isn't in the opportunity addresses sheet.

My formula:

=INDEX({Opportunity Addresses Range 1}, MATCH(Address@row, {Opportunity Addresses Range 2}))

The frustrating part is validating the formulas is utterly useless. I cannot confirm that range 1 and range 2 are in fact the address and distance columns, and this eliminates the validations.

Answers

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