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Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

  1. 03-27-2017, 04:23 AM #1
    MrsCharmy
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    Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    Which Formula i have added in data validation cell. Pl send me formula and if possible than also send example in excel.

    I am entering various Receipt No. in Column A, B & C. I don't want duplicate Receipt No.
    Last edited by MrsCharmy; 03-27-2017 at 04:25 AM. Reason: More Specification.
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  2. 03-27-2017, 04:35 AM #2
    MrsCharmy
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    Re: DataValidation

    Let Me clarify my issue in details.

    I have entered Receipt No. 1 In A1, 2 in A2, 3 in A3, 6 in A4, 7 in A5 &
    4 in B1, 5 in B2 &
    8 in C1, 9 in C2 & 10 in C3 - Column

    Suppose Now i an doing entering 3 in C4 than i must be prevented and flagged with Duplicate
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  3. 03-27-2017, 04:46 AM #3
    MrsCharmy
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    Can you suggest write fourm my Issue? Pllllll Help if. Thnx
    Last edited by MrsCharmy; 03-27-2017 at 04:48 AM. Reason: Speling mistake
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  4. 03-27-2017, 04:52 AM #4
    Manikandan Arumugam
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    MrsCharmy,

    Select the range of cells in which you want to prevent duplicates.
    From the Data menu select Validation. Click on the Settings tab. From the Allow dropdown box select Custom.
    In the formula box type =COUNTIF($A$1:$C$100,A1)=1 (Change the range as per your requirement)

    try this.
    Last edited by Manikandan Arumugam; 03-27-2017 at 04:55 AM.
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  5. 03-27-2017, 05:22 AM #5
    MrsCharmy
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    By This Formula [ =COUNTIF($A$1:$c$20,A1)=1 ] my issue solved.

    but my data is not stored serially in Column A, B & C. But Say in Column A, D & F.
    Than how i can define this This three range in one formula.

    Thnx.
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  6. 03-30-2017, 02:10 AM #6
    ratcat
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    G'day,

    Would some thing like this help ? Remember to change the countif ranges to suit your workbook.

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  7. 03-30-2017, 02:16 AM #7
    AliGW
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    I have moved the misplaced post from the other thread into this one and now removed the extraneous posts. For future reference, Kev - had you reported the misplaced post in the other thread, we could have resolved this sooner. Please don't forget that the report button can be used for this sort of thing. Many thanks!
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  8. 03-30-2017, 02:54 AM #8
    kev_
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    @AliGW
    As you can see from my post, I thought this was user error. I chanced upon a mispost on the other thread and thought the user had 2 windows open (one for each thread) and did what I have previously done myself and typed in the wrong window
    So that I can be more observant in future, can you please explain how to identify this as a "forum" glitch as opposed to a "user" glitch.
    Thanks
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  9. 03-31-2017, 08:40 AM #9
    MrsCharmy
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    Re: Prevent Duplicate Receipt Number in Three Column [ e.g. Column "A", "B", "C" ]

    My Issue Now Solved.
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