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VBA which runs in case of duplicate information

  1. #1
    Forum Contributor
    Join Date
    MS-Off Ver
    Office 2019

    VBA which runs in case of duplicate information

    Hi All,

    I would like whether it would be possible to create a macro for the situation below:

    I have a column, Column A, and in this column I usually Insert dates, one below the other.

    Would it be possible to create a macro which automatically runs if by mistake I insert the same date twice.

    The idea would be that if I insert a date twice, a dialog user form with the message 'Error' would pop up.

    Not sure if this is possible, but would be really great if someone can help.

    Appreciate a lot your kind help.



  2. #2
    Forum Guru
    Join Date
    Tokyo, Japan
    MS-Off Ver
    2013 O.365

    Re: VBA which runs in case of duplicate information

    How about Data Validation?

    If you google with the keywords like

    Excel prevent duplicate entry

    You will get the idea.

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