BT Feature by Salesforce

Salesforce has a number of features that they can enable or enhance via their “Black Tab” on an org by org basis.

SSN Validation rule

Recently we come up with requirement where we need to validate Social security number. Here it is for you all. Before that i want to elaborate on structure of SSN number. it is nine-digit number in the format "AAA-GG-SSSS".The number is divided into three parts first part denotes the Area and middle 2 digit is Geo and last four digits are Serial Numbers that represents a numerical sequence of digits from 0001-9999.

Not(OR(LEN(SSN__c)=0,REGEX(SSN__c,"[0-9]{3}-[0-9]{2}-[0-9]{4}"))).