"Overall Europol manages well the verifications of the US DoT requests. The different actors complement each other and pay close attention to details."
European Data Protection Supervisor: Report on the inspection of Europol’s compliance with Article 4 of the Terrorist Finance Tracking Programme (pdf):
“The EDPS has identified good practices when Europol analyses the US requests. Europol takes into account other information than what is provided in the request to assess the necessity, such as the work experience of Europol staff, trends, statistics and intelligence provided for example in the TE-Sat. In addition, they receive regular training by the Designated Provider (DP) in order to keep staff members up to date as regards the message types and related data categories.”