I don't know why the collection-valued navigation properties are always return an empty list with a reference to the actual data link.
here's the query I tried :
GET <organization>/api/data/v8.0/new_subjectareas?$expand=new_product_new_subjectarea&$count=true
Response :
{
"@odata.context":"<organization>/api/data/v8.0/$metadata#new_subjectareas",
"@odata.count":150,
"value":[
{
"@odata.etag":"W/\"9644599\"",
"timezoneruleversionnumber":null,
"processid":null,
"_stageid_value":null,
"new_product_new_subjectarea":[],
"new_product_new_subjectarea@odata.nextLink":"<organization>/api/data/v8.0/new_subjectareas(622bcca9-8946-e511-80fb-00155d002810)/new_product_new_subjectarea"
},
....How can I get the items within the navigation property (new_product_new_subjectarea) without make a new request to it's reference (new_product_new_subjectarea@odata.nextLink)?