Formula to identify common accounts if occurring within set timeframe

eagerexceler

New Member
Joined
Jan 10, 2017
Messages
34
Office Version
  1. 2016
Platform
  1. Windows
Hello,

I have a large set of data (300k rows with unique account numbers) that in some instances also share a common identifying number. I want to identify accounts that share the common account identifier in cell C4 only if the date in cell d4 occurs less 30 days of a date in column D with the common account identifier in column C. Basically I need to identify if an account with this common identifier has another account with the same account identifier AND occurring in less than 30 days from each other.

Hope I didn't make this explanation too convoluted!

Thanks,
 

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