Get available filter options for cases and earnings

Returns distinct filter options available for the authenticated referral partner's cases and earnings pages.

Countries — Distinct debtor countries from the referral partner's case history, sorted alphabetically.

CarveoutPartners — Collection partners from the referral partner's active JurisdictionPricingZone records (DateDeleted == null and DateDeactivated == null), sorted alphabetically.

Use the returned IDs as values for the CountryIds and CollectionPartnerIds query parameters on the cases and reporting/transactions endpoints.