Article 20 1.

Qualified trust service providers shall be audited at their own expense at least every 24 months by a conformity assessment body. The audit shall confirm that the qualified trust service providers and the qualified trust services provided by them fulfil the requirements laid down in this Regulation and in Article 21 of Directive (EU) 2022/2555. Qualified trust service providers shall submit the resulting conformity assessment report to the supervisory body within three working days of receipt.