š This endpoint requires HTTP authentication (either Basic or Bearer).
For authenticating with Bearer token, required scopes are: collections(w).
Add items to a collection, or update existing items. Items already in the collection are updated, others are added. Note that the total number of items per collection is limited, and the request will fail if adding items would exceed this limit.
400Validation Error
401Credentials are not passed or action is forbidden.
403The supplied token does not have the required permissions.
404Not Found
429Rate limit breached