Complex sentence: A time limited transition rule for holders of the now outdated "Rettungsassistent" certification is valid until the year 2022: mandatory courses dependent on time of work experience and a supplemental state exam or attending the full state exam for "Notfallsanitäter".
Split into simpler sentences: A time limited transition rule for holders of the now outdated "Rettungsassistent" certification is valid until the year 2022. It requires mandatory courses dependent on time of work experience and a supplemental state exam, alternative attending the full state exam for "Notfallsanitäter".