The type of relationship that exists between FulfillmentOrder and Location is Many-to-One Lookup (Location) FulfilledFrom Location Id. A Lookupfield is a type of custom field that creates a relationship between two objects, but does not support rollup summary fields. A Many-to-One relationship means that many child records can be related to one parent record, but not vice versa. In this case, a FulfillmentOrder has a Lookup field named FulfilledFrom Location Id that references a Location record. A Location is a record that represents a physical location from which order product items are fulfilled, such as warehouses and retail stores. A Locationcan have many FulfillmentOrders associated with it, but a FulfillmentOrder can only have one Location. Verified References: https://help.salesforce.com/s/articleView?id=sf.custom_field_types.htm &type=5https://help.salesforce.com/s/articleView?id=sf.order_management_location.htm &type=5