Updates a loyalty tier.
Call this method to update tier-specific settings, such as the name and the required points threshold of an individual loyalty tier. To update global settings that apply to all of a site's loyalty tiers, call Update Tiers Program Settings.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
Tier ID.
Tier info to update.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.