Both in the preliminary edition of Chaplin (International Conference on Cataloguing Principles, 1966) as in the final of Verona (International Conference on Cataloguing Principles, 1971), referred to the absence of another function that must meet a catalog: the provide the location of the resources registered. This absence is explained by the fact that this function does not correspond to author or title access points, but other elements of the registry that are not under consideration in this case. Anyway, the recognition of its existence, is important since it is an essential function that distinguishes the catalogues of other types of indexes or bibliographic as bibliographies tools. Although the Paris principles were the basis for the drafting of the Anglo-American cataloging rules, these never incorporated into your text the enunciation of the goals of the catalog. During the 30 years following the emergence of the Paris principles in 1961, significant changes occurred in the area of cataloging, many of them originating from the implementation of new technologies of information to the compilation of catalogues. Automation of the catalogues, the development of cooperative cataloging systems, a growing convergence of standards of bibliographic control, and the emergence of new types of resources such as electronic resources for remote access, generated different approaches on the validity and need for revision of the objectives of the catalog. Some authors argued the validity of the objectives enunciated by Cutter and the Paris principles (Malinconico, 1976). Others desestimaban the utility of existing statements on the objectives of the catalog in the field of automated catalogues (Carpenter, 1992).

Different reformulations were also proposed to adapt the objectives to the new environment in which they develop catalogues. Wilson (1989) argues that the direction of technological advances in the field of information leads to a dissociation between document storage and viewing. Increasingly, libraries they will give access to virtual copies of documents that are not part of the library’s collection.