5. The competent authorities referred to in Article 13 shall, upon their written request, require payment card schemes and/or payment service providers to provide all information necessary to verify the correct application of paragraphs 3 and 4 of this Article. Such information shall be sent to the competent authority before 1 March of the year following the reference period referred to in the first sentence of paragraph 4. Any other information enabling the competent authorities to verify compliance with the provisions of this Chapter shall be sent to the competent authorities upon their written request and within the deadline set by them. The competent authorities may require that such information is certified by an independent auditor.