Hi Raj,crmtech21

Actually this is my situation i have a validation rule on lead object for my users to take ownership, if user role is 'salesrep'.I'm writing a trigger on task object of lead to update lead fields i'm facing a tricky situation, in my sandbox i'm not getting any errors as i mention.I login as one of my user of salesrep role i'm able to create the task on a lead which is not owned by him(owned by queue), while updating leads i'm setting present login user as lead owner will it bypass the validation rule? But in production i'm getting the error ...!

Here is my trigger code...please go thriugh this and tell me the exact behaviour

trigger activitycall2 on task(after insert, after update) {
    Set<id> leadIds = new set<id>();    // Lead container
    task[] tasks = new task[0];         // matched tasks
    id queueid,Id1;
    UserRole[] roles;
    Lead a;
    
    // are there any leads?
    for(task record:trigger.new) {
        if( record.CallDurationInSeconds > 0 || record.whoid != null && record.whoid.getsobjecttype() == lead.sobjecttype ) {
            leadids.add(record.whoid);
            System.debug('size is'+leadIds.size());
            tasks.add(record);
        }
    }
    
    // if no leads, stop here
    if(leadids.isempty()) {
        return;
    }
    
   else {
        // Gettting user Role
        roles = [select id,name from userrole where id = :userinfo.getuserroleid()];

        
        // does the queue exist, and what is the id?
        
        for(group record:[select id from group where type = 'queue' and developername = 'Mailed_Data']) {
            queueid = record.id;
        }
        
        List<Lead> ownerids=[select id ,ownerid from lead where ownerid = :queueid and id in :leadids];
        if(ownerids.size()>0){
         
         a = ownerids.get(0);
         Id1=a.OwnerId;  
         System.debug(Id1);     
        } 
        
        
             
        // find any leads owned by the queue
        leadids.retainall((new Map<id,lead>([select id from lead where ownerid = :queueid and id in :leadids])).keyset());
                
    }
    map<id,lead> leads = new map<id,lead>();
    for(task record:tasks) {
    
        if(Id1==queueid){        
        leads.put(record.whoid,new lead(id=record.whoid,last_call_result__c=record.calldisposition, notes__c=record.Note_Summary__c, ownerid=userinfo.getuserid()));
        }
        else{
        leads.put(record.whoid,new lead(id=record.whoid,last_call_result__c=record.calldisposition, notes__c=record.Note_Summary__c));
        } 
    }
    
    update leads.values();
}

 Reply me ASAP...