USSPs require to know the availability of the services of the providers of common information to provide services to UAS operators without any discontinuance or even suspension of the services. USSPs also require to provide services with sufficient data quality to end users.
According to Acceptable Means of Compliance to Implementing Regulation (EU) 2021/664 in its AMC1 on Article 5(7), the single CIS provider should monitor the availability of services of the providers of common information. The single CIS provider should notify the USSPs about any detected availability issues with regard to the data received.