1. How to identify special characters in column of the data ?2. How to identify the correct email address ? According to requirement we have tried special character to identify but unable to add ' and % in celonis. The syntax which we have used is CASE WHEN("TABLE NAME"."COLUMN NAME") IN_LIKE ('!','@','#','$','^','*','(',')','- ','_','+','=','{','}','[',']','|','/',':',';','"','<','>',',','.','?') THEN 'CLEANSE' ELSE 'PERFECT' when we are adding ' and % two characters output is getting changed. For identifying the correct email address we have got this syntax IF(match_regex($email, '[a-zA-Z0-9_\\-]+@([a-zA-Z0-9_\\-]+\\.)+(com|org|edu|nz|au)', null))but its not working.