https://community.appian.com/discussions/f/new-to-appian/24083/pannumber-validationi want to validate pan number ?en-USTelligent Community 12https://community.appian.com/thread/92825?ContentTypeID=1Mon, 28 Mar 2022 06:17:55 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:0a2bd829-a7f4-42df-a026-f993673156a3Tanvir Sarkar<p>use regexmatch function in the validation part.. then you need to define regex pattern, like first five charachers will be upper case alphabets, followed by 4 numbers &amp; end one upper case alphabet. if the regexmatch function returns true then no error, else show error message</p><div style="clear:both;"></div>https://community.appian.com/thread/92805?ContentTypeID=1Sun, 27 Mar 2022 04:39:45 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:667cd6f3-3b0b-4177-8b76-52cab4885336GopalK<p>Hi, in order to validate pan number ,you would need to know the criteria for a valid pan number. For example it should have ten characters ,the first 5 characters should be upper alphabets ,etc.Then you can write an expression to check all the criteria.</p><div style="clear:both;"></div>https://community.appian.com/thread/92802?ContentTypeID=1Sat, 26 Mar 2022 20:30:58 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a7cd0e19-56e0-40eb-8104-8c0f8e67e592Stefan Helzle<p>OK. What is a pan number? What did you try? What failed?</p><div style="clear:both;"></div>