Google "Jahresarbeitszahl Berechnung", then you will find a site w a e r m e p u m p e . d e. There you can calculate the annual performance factor. You don’t need anything else for the application.
Whether an eligible heat pump can actually be subsidized is only clear after calculating the annual performance factor. If some parameters, such as the installation location or the system configuration, are unfavorable, even an initially eligible heat pump will not achieve the minimum annual performance factor of 4.5.