Hi,
I would greatly appreciate some help.
I am validating two separate sources of data to see if the combination of style and classification match in another tab with the same 2 column match combination.

Tab one has two columns with the below format of numbers and dots. Example like below:

Style Classification
12345 1234.56.7890
67890 2345.67.8901

I'd like to build a formula that it would not only find the match combination of two columns in another tab, but it will alert me if there is a mismatch on the classification column. The style must be an exact match.

So for example, going along with above 'tab 1'. Tab 2 would be something like:

Style Classification
67890 2345.68.8901
52597 1235.67.7891
12345 1234.56.7890

The formula would detect that the combination of "12345 1234.56.7890" there is a perfect match when comparing the two column combination on two separate tabs. A note like "match" would be reflected.
The formula will also detect that the combination "67890 2345.67.8901" has a mismatch on the classification #. Since the style is a perfect match but not the classification #. And a message like "mismatch" would be reflected.

Thanks for your help in advance.