get
https://api.preczn.com/v1/merchants//locations
Returns one page of locations in the platform's standard list envelope — { locations, hasMore, lastId } — never a bare array. Page forward by passing the previous response's lastId. A merchant with no locations returns an empty envelope with HTTP 200, not a 404.
Unauthorized (test-mode mismatch).
Forbidden (platform mismatch).
Merchant not found, or lastId is not a location on this merchant.