_links_related_sku

The links_related_sku – this products are shown on the product detail page. There is also a position field for each related product in which you can optionally set the position of the particular product within the Related Products block on the frontend. You can find the field in magento under the section Catalog > Manage Products > Related Products.

– Article reference to PIM product
– Also the _links_related_position can be mapped (number)
– Non-obligatory