Set Maximum Number Of Entries In A Range - Data Validation?

Dec 8, 2012

Basically in cells b12:b26 (15 cells) I need to enter the type of item (which is limited to 2 items). I made a drop down list for that range which works perfectly, therefore the user can choose either item 1 or item 2 or blank. However, I need to figure out a way so that item 1 can be chosen a maximum of 10 times in the range, and item 2 can only be chosen 5 times in that same range..

I am assuming that you can't add that condition to the drop down list... So I was thinking of adding an extra column duplicating b12:b26 (c12:=b12 etc...)- and entering a data validation there.

I was going to enter the following:

if item 1 is chose : =NOT(COUNT($c$12:$c$26)>10) &
if item 2 is chosen: =NOT(COUNT($c$6:$c$6)>5).

However, for some reason it doesn't work - it doesn't block the entry if I try to enter 11 item 1s or 6 item 2s.

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Nov 7, 2007

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Jul 6, 2009

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I know I can do this with a formula that will place all the results from different cells into a single cell, but I would then have to create multiple data validation entries of which I would rather avoid if possible. Not to mention I don't remember how to do this formula anyway......

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