++++ 1. Competition ° Transport ° Rules governing competition ° Transport by rail ° Regulation No 1017/68 ° Scope ° Decision of an association of railway undertakings laying down conditions for the accreditation of travel agencies authorized to issue international railway tickets and the conditions of sale of tickets ° Included (Council Regulation No 1017/68, Arts 1 and 2) 2. Actions for annulment of measures ° Pleas in law ° Breach of an essential procedural requirement ° Error in law involving the application of Regulation No 17 instead of Regulation No 1017/68 in proceedings concerning an infringement of the rules governing competition ° Deprivation of procedural safeguards (EEC Treaty Art. 173; Council Regulations Nos 17 and 1017/68)