post
https://{project_url}/webservice/rest-api/{api_interface}/{version}/recommendation-engine/shopping-cart/actions/combine
It selects the best products from an initial list for the customer shopping cart. Eliminates all products that don't match future customer preferences (depends on other customers' shopping behavior with the same products). If needed, it fills the missing number of results from the best products depends on the prediction algorithms.
Too many requests - more than the resource limit.
Temporary state when the service is temporarily unavailable, overloaded or there is a maintenance window.