(6)Competent authorities should be able to require prior notification of marketing communications for the purpose of ex-ante verification of compliance of those communications with this Regulation and other applicable requirements, such as whether the marketing communications are identifiable as such, whether they describe the risks and rewards of purchasing units of a UCITS and, where a Member State allows marketing of AIFs to retail investors, the risks and rewards of purchasing units or shares of an AIF in an equally prominent manner and whether all information in the marketing communications is presented in a manner that is fair, clear and not misleading. That verification should be performed within a limited timeframe. Where competent authorities require prior notification, this should not prevent them from verifying marketing communications ex-post.