Limit which tiers appear for each rate plan type so your brokers see only the tiers that apply when they create a rate plan. Reduce the chance of selecting a tier that doesn't apply. Existing rate plan types stay linked to all tiers until you change the links, so brokers see the same options as before.
Where: This change applies to Lightning Experience in Professional, Enterprise, and Unlimited editions where Financial Services Cloud and Insurance Brokerage are enabled.
How: In Setup, associate each tier with the rate plan types it applies to. Your brokers then see only those tiers when they create a rate plan.