A CEN standard enables a European-wide economy of scale in developing products and tools that handle transport data, as well as a much higher degree of supplier independence for those purchasing systems. Use of a standard format reduces the number of different interfaces that have to be developed and supported to exchange data between diverse systems, NeTEx uses mainstream XML technology for which there is a large skill base and many toolsets. The NeTEx XML schema includes data and referential integrity checks that reduce development time. The presence of these checks increased data quality automatically throughout the life of the standards