Booking API Bookings not working in sandbox

I am receiving the following errors in my sandbox when trying to get bookings thru API. When I switch to production I can get the bookings object back. How do I activate appointments/bookings in sandbox?

Edit: I also get the error in the API Explorer sandbox

errors: [
[Object: null prototype] {
detail: ‘Merchant not onboarded to Appointments’

That authentication error is caused by not having the correct permissions when calling the Bookings API. You’ll need to make sure you have the correct Seller-level and buyer-level permissions to call the API. :slightly_smiling_face: