def _validate_dlq(self):
<EOL>valid_dlq_types = str(list(self.dead_letter_queue_policy_actions.keys()))<EOL>if not self.DeadLetterQueue.get('<STR_LIT>') or not self.DeadLetterQueue.get('<STR_LIT>'):<EOL><INDENT>raise InvalidResourceException(self.logical_id,<EOL>"<STR_LIT>"<EOL>.format(valid_dlq_types))<EOL><DEDENT>if not self.DeadLetterQueue['<STR_LIT>'] in self.dead_letter_queue_policy_actions:<EOL><INDENT>raise InvalidResourceException(self.logical_id,<EOL>"<STR_LIT>".format(valid_dlq_types))<EOL><DEDENT>
Validates whether the DeadLetterQueue LogicalId is validation
        :raise: InvalidResourceException