Activity › Forums › Salesforce® Discussions › How do I make a field read only in Salesforce trigger? Salesforce® Discussions How do I make a field read only in Salesforce trigger? Posted by Ratnesh on August 26, 2020 at 2:43 PM How do I make a field read only in Salesforce trigger? Ratnesh replied 5 years, 9 months ago 1 Member · 0 Replies 0 Replies Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me