post https://rls.congacloud.com/api/revenue-admin/v1/price-lists//price-list-items
creates one or more price list items in a specific price list. It can create a maximum of 1000 price list items. It can create multiple price list items for the same product or multiple products. To create multiple price list items, pass one array for each price list item record in the API request.
When executed, this API returns a unique price list item ID (string) that CPQ automatically generates.