(55)Differing technical formats or processes and messaging standards could potentially create obstacles to interoperability, not only within each Member State but also and especially between the Member States. For example, in order to participate in a procurement procedure in which use of electronic catalogues, which is a format for the presentation and organisation of information in a manner that is common to all the participating bidders and which lends itself to electronic treatment, is permitted or required, economic operators would, in the absence of standardisation, be required to customise their own catalogues to each procurement procedure, which would entail providing very similar information in different formats depending on the specifications of the contracting authority concerned. Standardising the catalogue formats would thus improve the level of interoperability, enhance efficiency and would also reduce the effort required of economic operators.