code: def incomplete(transaction):
          
          transaction.block_transfer = True
          transaction.response = Response()
          transaction.response.destination = transaction.request.source
          transaction.response.token = transaction.request.token
          transaction.response.code = defines.Codes.REQUEST_ENTITY_INCOMPLETE.number
          return transaction
docs: Notifies incomplete blockwise exchange.
  
          :type transaction: Transaction
          :param transaction: the transaction that owns the response
          :rtype : Transaction
          :return: the edited transaction