Since the lookup table is sorted in ascending order on its first column,
the following would allow you exploit that fact...

=IF(LOOKUP(A5,Table!$A$1:$A$500)=A5,LOOKUP(A5,Tabl e!$A$1:$B$500),"")

without unexpected return values.

Brad Gover wrote:
The formula is
=LOOKUP(A5,Table!$A$1:$A$500,Table!$B$1:$B$500)

Cell A5 contains a number like 100236.
Worksheet "Table" cell range contains $A$1:$A$500 part
numbers in increasing order. Cell range $B$1:$B$500
contains the discriptions. Everything works fine until a
part number is imported that has no part number to
reference in the table. Appriciate any advice.


-----Original Message-----
what formula are you using for the lookup ?

Regards

Trevor


wrote in message
...

Hi all. I was wondering how to error trap inported data
that uses one column as a lookup. i.e., that column has
imported part numbers and the column next to it looks

up a

discription for that part number in another worksheet

and

displays it next to the imported part number. The

problem

is if the part number and discription is not in the

lookup

table, the cell unfortunately reverts to the previous

cell

in the lookup table and displays it. It does not show

an

error or something to indicate no match for that cell

part

number in the discription cell. Any solutions?


.