Tuesday 23 August 2016

PreventAccountduplicacy

trigger PreventAccountduplicacy on Account (before insert, before update) {
 map<Id,Account> existingAccountMap = new  map<Id,Account>([Select Id, Name From Account]);
     for(Account a : Trigger.new){
        if(a.name == existingAccountMap.get(a.Id).Name){
          a.adderror('dulplicate account'+a);
       
        }
     }
     }

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