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How to Avoid Duplicates in Column in Google Sheet?

Follow below steps to avoid duplicates in Column in google sheets Select column in which you wish to avoid the duplicatesGo the Data -> Validation In Criteria select Custom Formula is and put the formula =COUNTIF(B:B, B1)=1 (where B is the column and B1 is the start of the column after which we have to check for duplicates) If you copy the duplicate value in the column it will highlight…
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