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Hi,

the following trigger was designed to prevent duplicate contacts on an account. But even when i edit the same contact and click save, the trigger acts and does not let me save the contact.

please help me figure out whats wrong with the trigger

trigger PreventDuplicateContact on Contact (after insert,after update) {
   
    if(trigger.isInsert || trigger.isUpdate)
    {
        Map<Id,List<Contact>> accMap = new Map<Id,List<Contact>>();
        List<Contact> contactList;
       
        for(Contact c: [Select Id,Email,accountId from Contact]){
            if(accMap.containsKey(c.accountId)){  
                accMap.get(c.accountId).add(c);
            }
            else{
                contactList = new List<Contact>();
                contactList.add(c);
                accMap.put(c.accountId,contactList);
            }      
        }
       
        for (Contact c : Trigger.new)
        {
            if(accMap.containsKey(c.accountId)){
                for(Contact con : accMap.get(c.accountId)){
                    if(c.Email == con.Email){
                       // c.Email.addError('Contact with this email address already exists.Please create a Contact Role. <a href=https://cs18.salesforce.com/02Z/e?parentId='+c.accountid+'\'>Create a Contact Role</a>',false);
                       String baseUrl = URL.getSalesforceBaseUrl().toExternalForm()+'/02Z/e?parentId=';
string errorMsg = '<a style=\'color:1B2BE8\'href="'+baseUrl+ c.accountid +'"> Create a Contact Role  </a>';

c.Email.addError('Contact with this email address already exists.Please create a Contact Role'+ errorMsg,false);
                    }
                }
            }
        }
    }
}

Hi Folks,

Can someone help me,

Am not able to see the line-by-line code coverage in Developer Console, though am able to see the percentage covered.

Is it a known issue or am doing something wrong.

Please suggest.

Many Thanks,
Uday