Yes, there are minimum and maximum sum insured requirements for the base plan, FWD Life Protection, and the riders.
Minimum sum insured = S$50,000
Maximum minimum protection level (MPL) (sum insured x multiplier factor) = S$20,000,000
Early CI Protection Rider and CI Protection Rider
Minimum sum insured for both riders = S$25,000
Maximum rider MPL (sum insured x multiplier factor) for both riders = S$4,000,000