compare data and move it to new sheet

Hi, I'm new to VBA. and can any one assist me to have vba cod that can do the following.


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1. I need to compare data by "Item No" in both Sheets " sheet1 and sheet2" and move any duplicated rows to a new sheet "Sheet3".
2 . in sheet three I need it to sort the data by "Item No"

I will be appreciate any assist.
Regards