Data validation: cell must match another cell based on multiple cells

**dadrivr** · 06-04-2013, 07:49 PM

I'm trying to implement data validation to require the same data to be entered in two different sheets of the same workbook (double data entry reduces errors). Here is a small example (the data structure is the same in each sheet):

ID	age	rater	score
1	10	1	30
1	10	2	40
1	10	3	50

My goal is to set a data validation in Sheet2 so that each value for "score" equals the corresponding value for "score" in Sheet1 (as defined by having the same values for ID, age, and rater in its row). In other words, an error should be displayed if someone types a score other than 30 for the row containing ID=1, age=10, rater=1 in Sheet 2.

Any help would be greatly appreciated. Many thanks!

**vlady** · 06-04-2013, 08:08 PM

try in data validation custom.

Formula:

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validation.xlsx

**dadrivr** · 06-06-2013, 04:31 PM

Very helpful, thank you! Just to note for future readers, make sure you enter it as an array formula (CTRL-Shift-Enter).

**vlady** · 06-06-2013, 07:24 PM

Your welcome.

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