validate duplicate entry in a column
 

would like error notification when a duplicate entry is made in a specific
column in excel worksheet can this be done with validation function ?

validate duplicate entry in a column
 

This works if you have entries in column A and check column B against it (
it will tell you in which row your duplicates are.
Put this in column C and fill down.

=IF(ISNA(MATCH(B1,A$1:A$8000,0)),"no match","ID is in Row: " &
MATCH(B1,A$1:A$8000,0))

"wangan" wrote:

would like error notification when a duplicate entry is made in a specific
column in excel worksheet can this be done with validation function ?

validate duplicate entry in a column
 

See:

http://www.cpearson.com/excel/NoDupEntry.htm


--
Gary''s Student - gsnu200724


"wangan" wrote:

would like error notification when a duplicate entry is made in a specific
column in excel worksheet can this be done with validation function ?

validate duplicate entry in a column
 

the foumlua works.
but if i using cncatenate, it cant. any tips to further enchance?

"ufo_pilot" wrote:


This works if you have entries in column A and check column B against it (
it will tell you in which row your duplicates are.
Put this in column C and fill down.

=IF(ISNA(MATCH(B1,A$1:A$8000,0)),"no match","ID is in Row: " &
MATCH(B1,A$1:A$8000,0))

"wangan" wrote:

would like error notification when a duplicate entry is made in a specific
column in excel worksheet can this be done with validation function ?

validate duplicate entry in a column
 

i had seen that website long before.

it cant works if i using CONCATENATE formula in that column.



"Gary''s Student" wrote:

See:

http://www.cpearson.com/excel/NoDupEntry.htm


--
Gary''s Student - gsnu200724


"wangan" wrote:

would like error notification when a duplicate entry is made in a specific
column in excel worksheet can this be done with validation function ?