(19)In order to ensure effective and secure communication between the relevant actors in the context of account information services, payment initiation services and confirmation on the availabilty of funds, it is necessary to specify the requirements of common and secure open standards of communication to be met by all relevant payment service providers. Directive (EU) 2015/2366 provides for the access and use of payment account information by account information service providers. This regulation therefore does not change the rules of access to accounts other than payment accounts.