Recital 63

(63)It is necessary to reinforce provisions on exchange of information between national competent authorities and to strengthen the duties of assistance and cooperation which they owe to each other. Due to increasing cross-border activity, competent authorities should provide each other with the relevant information for the exercise of their functions, so as to ensure the effective enforcement of this Directive, including in situations where infringements or suspected infringements may be of concern to authorities in two or more Member States. In the exchange of information, strict professional secrecy is needed to ensure the smooth transmission of that information and the protection of particular rights.