Hello frinds, Today i am talking about , how to solve mixd DML error in Apex, This error mostly come when , yiu are writing Apex Test . When are you insert Setup and non-setup object records in single transaction. Step-1- Writing Apex test class @isTest public class MIXEDDML { @isTest public static void TestData(){ UserRole obj=new UserRole(Name= 'ABC'); insert obj; Profile pf= [Select Id from profile where Name='System Administrator']; String orgId=UserInfo.getOrganizationId(); String dateString=String.valueof(Datetime.now()).replace(' ','').replace(':','').replace('-','') ; User uu=new User(firstname = 'ABC', lastName = 'XYZ', email = 'ak288@test.org', Username = 'ak288@test.org', EmailEncodingK...