Article 1
Transmission and adjustment procedures 1. The transmitted indices and metadata shall be sent in electronic form by the Member States to the Commission (Eurostat). Transmission shall conform to appropriate interchange standards approved by the Statistical Programme Committee. Eurostat shall make available detailed documentation in relation to approved standards and shall supply guidelines on how to implement these standards. 2. The transmitted indices and metadata shall be prepared in such a way as to allow a thorough interpretation of the results and the efficient application of the Commission's (Eurostat) seasonal adjustment procedures for the European aggregates. The index series shall be delivered in the following forms: (a) unadjusted; (b) working-day adjusted; (c) seasonally and working-day adjusted.