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Locking a date in a cell

  1. #1
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    Locking a date in a cell

    I am trying to lock a cell from updating after updating once. Basically I have a function looking if a number exsits on another sheet and if it doesn't it puts the date in the desired cell however once it is in the cell I do not want the date to change again

    I am not sure if this is a formatting cell issue or if it is a formula my formula looks like this so far

    =IF(AND(IFNA(VLOOKUP(A2,Input!B2:M51,1,FALSE)<>"",1)=1,A2<>""),TODAY(),"")

    Any help would be greatly appreciated

  2. #2
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    Re: Locking a date in a cell

    Just as a clarification this formula is in cells A2:A and B2:M1 is an absolute reference

  3. #3
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    Re: Locking a date in a cell

    Unfortunately, you cannot add todays date as a constant through a formula

    The shortcut CNTRL + semicolon enters today's date as a constant. or you could use VBA programming. Sorry
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  4. #4
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    Re: Locking a date in a cell

    I thought so. thank you

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