.

fiori/package.json

@@ -21,18 +21,18 @@
     },
     "requires": {
       "API_BUSINESS_PARTNER": {
-        "kind": "odata",
+        "kind": "odata-v2",
         "model": "@capire/suppliers"
       },
       "auth": {
         "strategy": "dummy"
       },
       "ReviewsService": {
-        "kind": "odata",
+        "kind": "odata-v4",
         "model": "@capire/reviews"
       },
       "OrdersService": {
-        "kind": "odata",
+        "kind": "odata-v4",
         "model": "@capire/orders"
       },
       "db": {

fiori/srv/mashup.cds

@@ -23,3 +23,9 @@ using { sap.capire.orders.Orders_Items } from '@capire/orders';
 extend Orders_Items with {
   book : Association to Books on product.ID = book.ID
 }
+
+
+using { OrdersService.Orders } from '@capire/orders';
+// extend service CatalogService with {
+//   entity OrdereredBooks as projection on Orders;
+// }