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trigger Auto_Create_Sale on biz3__Order__c (after insert) {

        if( Trigger.new.size() == 1 ){
        
                biz3__Order__c order = Trigger.new[0];
        
                biz3__Sales_Order__c so = new biz3__Sales_Order__c();
                so.biz3__Contact__c = order.biz3__Contact__c;
                so.biz3__Order__c   = order.Id;
                
                insert so;                

        }

}