How to use External Lookup Relationship Fields on External Objects

An external lookup relationship links a child standard, custom, or external object to a parent external object.

When you create an external lookup relationship field, the values of the standard External ID field on the parent external object are matched against the values of the external lookup relationship field. For a child external object, the values of the external lookup relationship field come from the specified External Column Name.

Example

In this screenshot, a record detail page for the Business_Partner external object includes two related lists of child objects. This example shows how external lookup relationships and page layouts enable users to view related data from within and from outsideSalesforce on a single page.

• Account standard object (1)
• Sales_Order external object (2)