Actually, I forgot about the positive integral part.

Change the Data validation formula to

=B1

and in B1, enter the formula

=OR(A1="BR",A1="NT",AND(NOT(ISERROR(FIND(RIGHT(A1, 1),"LPTVY"))),IF(NOT(ISERR
OR(VALUE(LEFT(A1,LEN(A1)-1)))),AND(VALUE(LEFT(A1,LEN(A1)-1))0,INT(VALUE(LEF
T(A1,LEN(A1)-1)))=VALUE(LEFT(A1,LEN(A1)-1))),FALSE)),AND(NOT(ISERROR(FIND(LE
FT(A1,1),"KD"))),IF(NOT(ISERROR(VALUE(RIGHT(A1,LEN (A1)-1)))),AND(VALUE(RIGHT
(A1,LEN(A1)-1))0,INT(VALUE(RIGHT(A1,LEN(A1)-1)))=VALUE(RIGHT(A1,LEN(A1)-1))
),FALSE)))

You need to use cell B1 because the formula is longer than the data
validation formula length limit.

HTH,
Bernie
MS Excel MVP


"Jack Sheet" wrote in message
...
Hi all

I want to set data validation on a cell so that it will accept the
following
(and only the following) text strings:
(1) "BR" (literally)
or
(2) "NT" (literally)
or
(3) "nA" where n is any positive integral numerical value including zero
and
A may take any of the values "L", "P", "T", "V" or "Y"
or
(4) "An" where n is any positive integral numerical value including zero
and
A may take either of the values "K" or "D".

Is this possible, please, and if so how? thanks

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