I need to validate the custom fields of the phone that should only store number and 9 digits.
Hello Ananias ,
You can use the Regex_Search Action from Outsystems.
With that action you can validate a string against a Regex Pattern, in your case you can try this pattern :
[0-9]{9} /gm
Wich will only select numbers, from 0 to 9, for 9 characters.
If you need to play around with your Regex you can check out Regex 101.
Hope it helps!
Paulo Rosário