Identifying duplicate data
I have rows of data that contain a column with an invoice number, if I am
entering a duplicate invoice number, I want to be alerted. I want to be allowed to enter duplicates, but I want Excel to somehow alert me that it is a duplicate so I can check it. What is a good way to do this? -- KKD |
Identifying duplicate data
For alert only you could use Conditional Formatting to highlight duplicated
numbers. Both instances will be highlighted. In FormatCFFormula is: =COUNTIF($A$1:$A$50,A1)<1 Format to a color and OK If you wanted to PREVENT duplicates you would enter this formula in Data ValidationAllowCustom =COUNTIF($A$1:$A$50,A1)=1 Gord Dibben MS Excel MVP On Wed, 27 May 2009 14:36:11 -0700, KKD wrote: I have rows of data that contain a column with an invoice number, if I am entering a duplicate invoice number, I want to be alerted. I want to be allowed to enter duplicates, but I want Excel to somehow alert me that it is a duplicate so I can check it. What is a good way to do this? |
Identifying duplicate data
One easy monitor/alert is to use a formula in an an adjacent col
Assume you are entering data in A2 down Put in B2: =IF(COUNTIF(A$2:A2,A2)1,"<<Dup !","") Copy down to cover the max expected extent of data in col A Col B will give you the necessary visual alerts Works ok? Click the YES button below -- Max Singapore http://savefile.com/projects/236895 Downloads:25,000 Files:300 Subscribers:70 xdemechanik --- "KKD" wrote: I have rows of data that contain a column with an invoice number, if I am entering a duplicate invoice number, I want to be alerted. I want to be allowed to enter duplicates, but I want Excel to somehow alert me that it is a duplicate so I can check it. What is a good way to do this? -- KKD |
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