Activity › Forums › Salesforce® Discussions › What is setHeader(key, value) method in Salesforce Apex? Salesforce® Discussions What is setHeader(key, value) method in Salesforce Apex? Posted by Sumit kumar on February 13, 2020 at 1:16 PM What is setHeader(key, value) method in Salesforce Apex? Aditya replied 6 years, 3 months ago 2 Members · 1 Reply 1 Reply Aditya Member February 13, 2020 at 1:37 PM Hi Sumit, To Set the content of the header which is requested Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me