Your message was sent before you saw my second posting acknowledging the
formula didn't work... it lets lots of things through that the OP wouldn't
want.

--
Rick (MVP - Excel)


"T. Valko" wrote in message
...
Try entering this:

' 12345

That is: apostrophe<space<space12345

--
Biff
Microsoft Excel MVP


"Rick Rothstein" wrote in message
...
Here is an even shorter formula that also seems to work...

=AND(EXACT(LEFT(A1,2),UPPER(LEFT(A1,2))),SUMPRODUC T(--ISNUMBER(--MID(A1,ROW($1:$99),1)))=5)

--
Rick (MVP - Excel)


"T. Valko" wrote in message
...
That allows more than 7 characters:

AB12345xxxxxx
AB1234567890

This seems to work:

=SUM(2-LEN(SUBSTITUTE(LEFT(A2,2),CHAR(ROW(INDIRECT("65:90 "))),"")),--(COUNT(-MID(A2,ROW(INDIRECT("3:7")),1))=5),--(LEN(A2)=7))=4

--
Biff
Microsoft Excel MVP


"vezerid" wrote in message
...
With the validated cell being A2:

=PRODUCT(--(CODE(MID(A2,ROW(INDIRECT("1:2")),1))=65))*PRODUC T(--(CODE
(MID(A2,ROW(INDIRECT("1:2")),1))<=90))*PRODUCT(--ISNUMBER(--MID(A2,ROW
(INDIRECT("3:7")),1)))

A bit complex but ensures that no . or E will be used in the last five
digits.

HTH
Kostis Vezerides

On Nov 28, 7:23 pm, wrote:
I want to use a non vb formula in data validation for an excel formula
to make the user enter the first 2 characters of a field as UPPERCASE
letters i.e. AB12345 - the format is always the same 2 letters 5
numbers.

Any ideas?