External Identifiers: Link A Partner From The Product Page

A product’s External Identifiers card shows a Not Linked badge when an identifier has no integration behind it. That badge is a button now: click it, pick the integration, and the identifier is linked — without leaving the product to find the action on the integration’s detail page.

Linking is catalog-wide. A partner name maps to one integration for the whole catalog, so linking from one product links every unlinked identifier under that partner name. The dialog says so before you confirm, and the row flips to Linked once the job finishes.