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Condition format prevent no is repeat

  1. #1
    Forum Contributor
    Join Date
    03-19-2010
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    singapore
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    Excel 2019
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    163

    Condition format prevent no is repeat

    need a conditional formula can be make the cell become red when A:A having the same no.
    It can prevent we key the no repeated.

    Thanks.

  2. #2
    Forum Guru
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    05-24-2011
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    Kuwait
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    2,200

    Re: Condition format prevent no is repeat

    Let's say the range starts from A2 to down. So select A2:LastRow, then on conditional format >> formula,

    =COUNTIF($A:$A,$A2)>1

    format as red.
    Regards,
    Haseeb Avarakkan

    __________________________________
    "Feedback is the breakfast of champions"

  3. #3
    Forum Contributor
    Join Date
    03-19-2010
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    singapore
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    Excel 2019
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    163

    Re: Condition format prevent no is repeat

    this formula can not work, have the single number also become red. anyone help please ?

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