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I have a &nbsp;list of documents &nbsp;in excel sheet <br />
&nbsp; DocNo DocRevNo CreationDate &nbsp; &nbsp;RevDate &nbsp; ........ more columns <br />
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How to see in excel &nbsp;if any DocNo is duplicate ?
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I have a  list of documents  in excel sheet 
  DocNo DocRevNo CreationDate    RevDate   ........ more columns 

How to see in excel  if any DocNo is duplicate ?

Find duplicates in excel

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.

Microsoft Excel

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.