System Requirement + System Requirement R22.0.2 System Requirement R22.0.2 (English) System Requirement R22.0.2 (German) + System Requirement R22.0 System Requirement R22.0 (English) System Requirement R22.0 (German) + System Requirement R21.0 System Requirement R21.0 (English) System Requirement R21.0 (German) + System Requirement R20.0 System Requirement R20.0 (English) System Requirement R20.0 (German) + System Requirement R19.1 System Requirement R19.1 (English) System Requirement R19.1 (German) + System Requirement R19 System Requirement R19 (English) System Requirement R19 (German) + System Requirement R18 System Requirement R18 (English) System Requirement R18 (German) + System Requirement R17.1 System Requirement R17.1 (English) System Requirement R17.1 (German)