diff --git a/app/services/admin_service.py b/app/services/admin_service.py
index 32609dba..38560586 100644
--- a/app/services/admin_service.py
+++ b/app/services/admin_service.py
@@ -845,9 +845,10 @@ class AdminService:
             job_id=job.id,
             status=job.status,
             marketplace=job.marketplace,
+            source_url=job.source_url,
             vendor_id=job.vendor.id if job.vendor else None,
             vendor_code=job.vendor.vendor_code if job.vendor else None,
-            vendor_name=job.vendor_name,
+            vendor_name=job.vendor.name if job.vendor else None,
             imported=job.imported_count or 0,
             updated=job.updated_count or 0,
             total_processed=job.total_processed or 0,
diff --git a/app/services/marketplace_product_service.py b/app/services/marketplace_product_service.py
index 9de1100c..3c96013a 100644
--- a/app/services/marketplace_product_service.py
+++ b/app/services/marketplace_product_service.py
@@ -344,7 +344,10 @@ class MarketplaceProductService:
             total_quantity = sum(entry.quantity for entry in inventory_entries)
             locations = [
                 InventoryLocationResponse(
-                    location=entry.location, quantity=entry.quantity
+                    location=entry.location,
+                    quantity=entry.quantity,
+                    reserved_quantity=entry.reserved_quantity or 0,
+                    available_quantity=entry.quantity - (entry.reserved_quantity or 0),
                 )
                 for entry in inventory_entries
             ]
diff --git a/app/services/vendor_service.py b/app/services/vendor_service.py
index d8a71cdb..ded91a8b 100644
--- a/app/services/vendor_service.py
+++ b/app/services/vendor_service.py
@@ -539,16 +539,16 @@ class VendorService:
         )
 
     def _get_product_by_id_or_raise(
-        self, db: Session, marketplace_product_id: str
+        self, db: Session, marketplace_product_id: int
     ) -> MarketplaceProduct:
-        """Get product by ID or raise exception."""
+        """Get marketplace product by database ID or raise exception."""
         product = (
             db.query(MarketplaceProduct)
-            .filter(MarketplaceProduct.marketplace_product_id == marketplace_product_id)
+            .filter(MarketplaceProduct.id == marketplace_product_id)
             .first()
         )
         if not product:
-            raise MarketplaceProductNotFoundException(marketplace_product_id)
+            raise MarketplaceProductNotFoundException(str(marketplace_product_id))
         return product
 
     def _product_in_catalog(
diff --git a/models/schema/inventory.py b/models/schema/inventory.py
index 5bf3245b..1e33efad 100644
--- a/models/schema/inventory.py
+++ b/models/schema/inventory.py
@@ -88,3 +88,11 @@ class InventoryMessageResponse(BaseModel):
     """Simple message response for inventory operations."""
 
     message: str
+
+
+class InventorySummaryResponse(BaseModel):
+    """Inventory summary response for marketplace product service."""
+
+    gtin: str
+    total_quantity: int
+    locations: list[InventoryLocationResponse]