This error message is returned in API responses when the API request involves a product (tour, service, class) that is not accessible via the Bookeo API.
By default all products in a connected account are accessible via the API.
However an account manager can disable access to the API for specific products. This is done in the "General" tab of the product settings page, by unticking the "Applications" checkbox.
An application using the Bookeo API can and should invoke GET /settings/products to find out which products are accessible via API. This is included in the response, where each returned product has a property apiBookingsAllowed .
Applications should not query the availability or try and create bookings for products where apiBookingsAllowed is false.