Select only Text duplication

[BEE]

Hello Everyone,

I am using Conditional Formatting "=COUNTIF($A:$A,A1)>1" to check
duplication in one column. I have texts and also numbers in the same column.
How can I make the Conditional Formatting to only check for Text duplication
and not numbers.

 

[OssieMac]

=AND(COUNTIF($A:$A,A1)>1,NOT(ISNUMBER(A1)))

 

[BEE]

Thank you very much OssiMac. It works perfectly.