The method can be used for sending a request to display all vouchers qualified to the given customer and context (e.g., order, loyalty reward). A checking logic won't run among coupons from bulk unique codes campaigns. For campaigns with multiple unique codes, you should run a dedicated function for searching for qualified campaigns.
As a sample use case, you can imagine a requirement of displaying below cart the coupons eligible to a customer. The customer can take and apply the proposed voucher.
Note that this method isn’t guaranteed to display all vouchers qualified to the given customer and context. It will check up to 150 standalone vouchers.
This operation returns the list of valid and active vouchers based on the qualification of given context (e.g., customer profile, redemptions metadata, order).