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Daniel:
Tks I will try it Damon "Daniel CHEN" wrote: Use menu data validations select "Custom" from [allow] and type "=COUNTIF($A$1:$A$1500,A1)=1" in [Formula] Assume your input will be in column A range A1:A1500. "DamonG" wrote in message ... Is there a way that I could prevent DUPLICATES in a column in XL? Similar to a "Key" in Access. |
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