43The Court of the European Union may be called upon to review a decision adopted under Article 20(4) of Regulation No 1/2003 for the purposes of ensuring that it is in no way arbitrary, that is to say, that it has not been adopted in the absence of facts capable of justifying an inspection. It must be borne in mind that the inspections carried out by the Commission are intended to enable it to gather the necessary documentary evidence to check the actual existence and scope of a given factual and legal situation concerning which it already possesses certain information. In the course of that review, the Court of the European Union must satisfy itself that there exist reasonable grounds for suspecting an infringement of the competition rules by the undertaking concerned (see Roquette Frères, paragraph 40 above, paragraphs 54 and 55 and the case-law cited).