Activity › Forums › Salesforce® Discussions › What are Salesforce ID’s composed of? Tagged: Base 62, Encode, Salesforce Records, Salesforce sObject, String Salesforce® Discussions What are Salesforce ID’s composed of? Posted by Ravi on April 30, 2016 at 6:23 PM What are Salesforce ID’s composed of? Piyush replied 9 years, 11 months ago 2 Members · 1 Reply Base 62EncodeSalesforce RecordsSalesforce sObjectString 1 Reply Piyush Member May 24, 2016 at 2:04 PM Hello Ravi, The Id Field Type is a base-62 encoded string. Where 15 character Id the breakdown is:- The first 3 digits are a prefix that specifies the type of sObject. 3 Digits (Object) / 12 Digits (Record) / (Optional) 3 Digits (Error Correction) Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me