There has been a great deal of interest lately in the potential problem that NDC traffic between travel sellers, airlines and intermediaries will be too much to handle economically in the available systems. This paper has been produced by T2RL to consider the problem and to assess some existing proposals that have been put forward by industry players. It also considers the proposition put forward by Amadeus that substantial take-up of NDC distribution would put unsustainable stress on NDC offer management systems.