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This navigation type contains either a navigation property or a term cast. The term either is of type Edm.EntityType, a concrete entity type, or a collection of these types.

...
define view ZExample_SalesOrder as select from sepm_cds_sales_order as so
association [0..1] to sepm_cds_business_partner as _BusinessPartner
on $projection.buyer_guid = _BusinessPartner.business_partner_key
{
key so.sales_order_id as SalesOrder,
so.buyer_guid,
...
@UI.lineItem: [ {
position: 20,
type: #WITH_NAVIGATION_PATH,
targetElement: '_BusinessPartner' -- Reference to association
} ]
so.customer.company_name as CompanyName,
...
_BusinessPartner
}