post https://api-us.bluestonepim.com/pim/products/attributes/by-ids
This endpoint allows users to upsert (update or insert) attribute values in a given set of products. It is
useful for bulk operations where attributes need to be added or updated in multiple products.
For more detailed information on how to work with the Management API (MAPI) in Bluestone PIM, refer to our help
pages Get started with Management API.