finding dupes (with a twist)

[Lyle]

Excellent, thanks for the reply! I'll definitely research the try...except block. And indexing errors.

The excel data is an output from another program (CRM). Once the dupes are identified, they will need to be researched before action is taken, so a separate excel with just the dupes would be ideal. Could I still accomplish that with the dictionary concept? I like the idea of not having to sort first.