Paul Lautman Wrote:
DarkByte wrote:
I'm assuming you'd want to use =AND(..) instead of =OR(...) as Paul
suggested.

"Paul Lautman" wrote:

madbloke wrote:
I'm currently checking for duplicate entries in a sheet by using
data validation - =ISNA(VLOOKUP($C53,RANGE1,1,FALSE)), so that if
a
duplicate is entered, it brings up an error message.

What I want to do is extend this to include other ranges i.e.
=ISNA(VLOOKUP($C53,RANGE1 RANGE2 RANGE3 etc,1,FALSE))

Is this possible? And if so, how? I've tried commas, semicolons,
colons, but nothing seems to work.

=OR(ISNA(VLOOKUP($C53,RANGE1,1,FALSE)),
ISNA(VLOOKUP($C53,RANGE2,1,FALSE)),
ISNA(VLOOKUP($C53,RANGE3,1,FALSE)))

Oops!

that's done the trick! Thanks, all!


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madbloke
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