Hello and thank you for helping me through this formatting question.
I am trying to consolidate years of data into a single document I can easily search and reference. When attempting to use the Union tool to compile months together the number of rows exceeds what Excel is capable of storing. I would like to simplify down to just 2 data points (Serial number and date sold) so I will then know which month of data to query for full data. I believe it should be simple with the Cross Tab tool, but this is a new tool for me and I'm not sure how to continue the data (column A, C, E, etc.)
Can you please tell me how to format my current data into the desired format below?
Thx!
Current format:

Desired format:
