If the ECB discovers a lack of precision, an omission or any other type of error in the text of the contract notice, invitation to tender or supporting documents, it shall rectify the error and inform all candidates or tenderers in writing.

If candidates or tenderers consider that the ECB’s requirements laid down in the contract notice, the invitation to tender or supporting documents are incomplete, inconsistent or illegal or that the ECB or another candidate or tenderer has infringed the applicable procurement rules, they shall notify their objections to the ECB within 15 days after they become aware of such an irregularity. If the irregularity affects the invitation to tender or other documents sent by the ECB, the time limit shall start to run from the date of receipt of the documents. In other cases, the time limit shall start to run from the time the candidates or tenderers become aware or could reasonably have become aware of the irregularity. The ECB may then either correct or supplement the requirements or remedy the irregularity, or reject the request indicating the reasons for doing so. Objections which are not communicated to the ECB within the time limit may not be raised at a later stage, and candidates or tenderers shall be precluded from raising them in an appeal procedure under Article 39 and in proceedings before the Court of Justice of the European Union.