If the Member States fails to communicate sufficient clarification within the deadline referred to in Article 11(2) and the Commission considers that the claim for reimbursement does not comply with the conditions laid down in this Regulation, it shall request the Member State to submit its observations within 15 calendar days. If the examination confirms the non-compliance, the Commission shall refuse to reimburse all or part of the expenditure concerned by the non-compliance and, where appropriate, request reimbursement of undue payments or de-commit the outstanding amounts.