66It follows that, in the circumstances of the present case, the Civil Service Tribunal did not err in law when it examined the possible breach of the relevant rules by Ms Putterie-De-Beukelaer’s 2005 CDR, in so far as that examination was necessary, first, for the analysis of the pleas alleging that the author of the contested act was not competent to adopt it and that there had been a breach of essential procedural requirements, which the Civil Service Tribunal could raise of its own motion, and second, in order to respond to a preliminary question which had to be resolved in the light of the arguments put forward by Ms Putterie-De-Beukelaer.