Why do my Mock APIs not connect?

URL OPEN/MOCK
1. OPEN - https://api-OPEN.magellanlp.com/OPEN/inventory/v3.1/reporting/in
2. MOCK - https://api-MOCK.magellanlp.com/MOCK/inventory/v3.1/reporting/in
Scope
1. OPEN
  1. api://swift-open-inventory-api/.default
  1. api://swift-open-loading-api/.default
  1. api://swift-open-shipping-api/.default
  1. api://swift-open-billing-api/.default
  1. api://swift-open-locations-api/.default
  1. api://swift-open-carrier-loading-api/.default
2. MOCK
  1. api://swift-mock-inventory-api/.default
  1. api://swift-mock-loading-api/.default
  1. api://swift-mock-shipping-api/.default
  1. api://swift-mock-billing-api/.default
  1. api://swift-mock-locations-api/.default
  1. api://swift-mock-carrier-loading-api/.default
Subscription Key: Make sure you are using the correct subscription key for header "Ocp-Apim-Subscription-Key"
1. OPEN = Core
2. MOCK

To connect Mock APIs, please verify the correct URL, scope, and subscription key in the header."