diff --git a/engines/dfc_provider/app/services/supplied_product_builder.rb b/engines/dfc_provider/app/services/supplied_product_builder.rb
index fe036dcfb1..1f9ff42df8 100644
--- a/engines/dfc_provider/app/services/supplied_product_builder.rb
+++ b/engines/dfc_provider/app/services/supplied_product_builder.rb
@@ -13,7 +13,11 @@ class SuppliedProductBuilder < DfcBuilder
       description: variant.description,
       productType: product_type,
       quantity: QuantitativeValueBuilder.quantity(variant),
-    )
+    ).tap do |supplied_product|
+      supplied_product.registerSemanticProperty("ofn:spree_product_id") do
+        variant.product.id
+      end
+    end
   end
 
   def self.import(supplied_product)
diff --git a/engines/dfc_provider/spec/requests/catalog_items_spec.rb b/engines/dfc_provider/spec/requests/catalog_items_spec.rb
index 0d401f9090..c082630044 100644
--- a/engines/dfc_provider/spec/requests/catalog_items_spec.rb
+++ b/engines/dfc_provider/spec/requests/catalog_items_spec.rb
@@ -15,7 +15,7 @@ describe "CatalogItems", type: :request, swagger_doc: "dfc.yaml",
   let(:product) {
     create(
       :base_product,
-      supplier: enterprise, name: "Apple", description: "Red",
+      id: 90_000, supplier: enterprise, name: "Apple", description: "Red",
       variants: [variant],
     )
   }
diff --git a/engines/dfc_provider/spec/requests/enterprises_spec.rb b/engines/dfc_provider/spec/requests/enterprises_spec.rb
index 3c3835452f..0e5f885490 100644
--- a/engines/dfc_provider/spec/requests/enterprises_spec.rb
+++ b/engines/dfc_provider/spec/requests/enterprises_spec.rb
@@ -22,7 +22,7 @@ describe "Enterprises", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc:
   let!(:product) {
     create(
       :base_product,
-      supplier: enterprise, name: "Apple", description: "Round",
+      id: 90_000, supplier: enterprise, name: "Apple", description: "Round",
       variants: [variant],
     )
   }
diff --git a/engines/dfc_provider/spec/requests/supplied_products_spec.rb b/engines/dfc_provider/spec/requests/supplied_products_spec.rb
index b310fff021..966ff2b56f 100644
--- a/engines/dfc_provider/spec/requests/supplied_products_spec.rb
+++ b/engines/dfc_provider/spec/requests/supplied_products_spec.rb
@@ -9,6 +9,7 @@ describe "SuppliedProducts", type: :request, swagger_doc: "dfc.yaml",
   let!(:product) {
     create(
       :base_product,
+      id: 90_000,
       supplier: enterprise, name: "Pesto", description: "Basil Pesto",
       variants: [variant],
     )
@@ -78,7 +79,7 @@ describe "SuppliedProducts", type: :request, swagger_doc: "dfc.yaml",
           example.metadata[:operation][:parameters].first[:schema][:example]
         end
 
-        it "creates a variant" do |example|
+        it "creates a product and variant" do |example|
           expect { submit_request(example.metadata) }
             .to change { enterprise.supplied_products.count }.by(1)
 
@@ -87,16 +88,23 @@ describe "SuppliedProducts", type: :request, swagger_doc: "dfc.yaml",
             %r|^http://test\.host/api/dfc/enterprises/10000/supplied_products/[0-9]+$|
           )
 
+          spree_product_id = json_response["ofn:spree_product_id"].to_i
+
           variant_id = dfc_id.split("/").last.to_i
           variant = Spree::Variant.find(variant_id)
           expect(variant.name).to eq "Apple"
           expect(variant.unit_value).to eq 3
+          expect(variant.product_id).to eq spree_product_id
 
           # Insert static value to keep documentation deterministic:
           response.body.gsub!(
             "supplied_products/#{variant_id}",
             "supplied_products/10001"
           )
+            .gsub!(
+              "\"ofn:spree_product_id\":#{spree_product_id}",
+              '"ofn:spree_product_id":90000'
+            )
         end
       end
     end
@@ -116,6 +124,7 @@ describe "SuppliedProducts", type: :request, swagger_doc: "dfc.yaml",
 
         run_test! do
           expect(response.body).to include variant.name
+          expect(json_response["ofn:spree_product_id"]).to eq 90_000
         end
       end
 
diff --git a/swagger/dfc.yaml b/swagger/dfc.yaml
index 8927ccfc1d..f08222b960 100644
--- a/swagger/dfc.yaml
+++ b/swagger/dfc.yaml
@@ -118,6 +118,7 @@ paths:
                       dfc-b:lifetime: ''
                       dfc-b:usageOrStorageCondition: ''
                       dfc-b:totalTheoreticalStock: 0.0
+                      ofn:spree_product_id: 90000
                     - "@id": http://test.host/api/dfc/enterprises/10000/offers/10001
                       "@type": dfc-b:Offer
                       dfc-b:price: 19.99
@@ -341,6 +342,7 @@ paths:
                       dfc-b:lifetime: ''
                       dfc-b:usageOrStorageCondition: ''
                       dfc-b:totalTheoreticalStock: 0.0
+                      ofn:spree_product_id: 90000
                     - "@id": http://test.host/api/dfc/enterprises/10000/catalog_items/10001
                       "@type": dfc-b:CatalogItem
                       dfc-b:references: http://test.host/api/dfc/enterprises/10000/supplied_products/10001
@@ -409,6 +411,7 @@ paths:
                     dfc-b:lifetime: ''
                     dfc-b:usageOrStorageCondition: ''
                     dfc-b:totalTheoreticalStock: 0.0
+                    ofn:spree_product_id: 90000
       requestBody:
         content:
           application/json:
@@ -471,6 +474,7 @@ paths:
                     dfc-b:lifetime: ''
                     dfc-b:usageOrStorageCondition: ''
                     dfc-b:totalTheoreticalStock: 0.0
+                    ofn:spree_product_id: 90000
         '404':
           description: not found
     put: