Enhanced discount input. It was possible to remove a discount that has not been saved yet.

lib/feature/delivery/detail/presentation/delivery_discount.dart

@@ -208,7 +208,7 @@ class _DeliveryDiscountState extends State<DeliveryDiscount> {
                     ),
                   ),
                   OutlinedButton(
-                    onPressed: _discountValue > 0 ? _resetValues : null,
+                    onPressed: _discountValue > 0 && widget.discount != null ? _resetValues : null,
                     child: const Text("Gutschrift entfernen"),
                   ),
                 ],

pubspec.lock

@@ -194,7 +194,7 @@ packages:
     source: hosted
     version: "4.10.1"
   collection:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: collection
       sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"