diff --git a/ApiCore-Frontend/src/app/(app)/apiaries/[id]/apiary-edit-card.tsx b/ApiCore-Frontend/src/app/(app)/apiaries/[id]/apiary-edit-card.tsx
index a3e8df4..77e21cf 100644
--- a/ApiCore-Frontend/src/app/(app)/apiaries/[id]/apiary-edit-card.tsx
+++ b/ApiCore-Frontend/src/app/(app)/apiaries/[id]/apiary-edit-card.tsx
@@ -43,6 +43,7 @@ export function ApiaryEditCard({ apiary }: { apiary: Apiary }) {
     onSuccess: () => {
       void queryClient.invalidateQueries({ queryKey: ["apiaries"] });
     },
+    onError: () => toast.error("Bienenstand konnte nicht gespeichert werden"),
   });
 
   const deactivateMutation = useMutation({
diff --git a/ApiCore-Frontend/src/app/(app)/bottling/[id]/bottling-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/bottling/[id]/bottling-edit-dialog.tsx
index 720f2c5..df4c8cb 100644
--- a/ApiCore-Frontend/src/app/(app)/bottling/[id]/bottling-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/bottling/[id]/bottling-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateBottlingBatch } from "@/lib/bottling/api";
 import { BottlingBatch } from "@/lib/bottling/types";
 import { fetchProducts } from "@/lib/products/api";
@@ -53,6 +54,7 @@ export function BottlingEditDialog({ bottlingBatch }: { bottlingBatch: BottlingB
       });
       setOpen(false);
     },
+    onError: () => toast.error("Abfüllung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/colony-edit-card.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/colony-edit-card.tsx
index e26c151..b65cd8a 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/colony-edit-card.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/colony-edit-card.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Layers } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateColony } from "@/lib/colonies/api";
 import { Colony, ColonyCondition, ColonyStatus, ColonyType } from "@/lib/colonies/types";
 import {
@@ -108,6 +109,7 @@ export function ColonyEditCard({ colony }: { colony: Colony }) {
       void queryClient.invalidateQueries({ queryKey: ["colonies"] });
       void queryClient.invalidateQueries({ queryKey: ["colonies", colony.id] });
     },
+    onError: () => toast.error("Volk konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/feeding-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/feeding-edit-dialog.tsx
index 5bd3301..84dc84d 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/feeding-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/feeding-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateFeeding } from "@/lib/feedings/api";
 import { Feeding, FeedType } from "@/lib/feedings/types";
 import { FEED_TYPES, FEED_TYPE_LABELS } from "@/lib/feedings/labels";
@@ -53,6 +54,7 @@ export function FeedingEditDialog({ feeding }: { feeding: Feeding }) {
       });
       setOpen(false);
     },
+    onError: () => toast.error("Fütterung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/inspection-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/inspection-edit-dialog.tsx
index 7e792fa..edcfa08 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/inspection-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/inspection-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateInspection } from "@/lib/inspections/api";
 import { Inspection } from "@/lib/inspections/types";
 
@@ -90,6 +91,7 @@ export function InspectionEditDialog({ inspection }: { inspection: Inspection })
       });
       setOpen(false);
     },
+    onError: () => toast.error("Durchsicht konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/swarm-control-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/swarm-control-edit-dialog.tsx
index 4cca543..2999b10 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/swarm-control-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/swarm-control-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateSwarmControlCheck } from "@/lib/swarm-control/api";
 import { SWARM_ACTION_LABELS, SWARM_MOOD_LABELS } from "@/lib/swarm-control/labels";
 import { SwarmControlAction, SwarmControlCheck, SwarmMood } from "@/lib/swarm-control/types";
@@ -53,6 +54,7 @@ export function SwarmControlEditDialog({ check }: { check: SwarmControlCheck })
       });
       setOpen(false);
     },
+    onError: () => toast.error("Schwarmkontrolle konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/treatment-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/treatment-edit-dialog.tsx
index 777f448..1df7e48 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/treatment-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/treatment-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateTreatment } from "@/lib/treatments/api";
 import { Treatment } from "@/lib/treatments/types";
 import { Button } from "@/components/ui/button";
@@ -55,6 +56,7 @@ export function TreatmentEditDialog({ treatment }: { treatment: Treatment }) {
       });
       setOpen(false);
     },
+    onError: () => toast.error("Behandlung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/colonies/[id]/varroa-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/colonies/[id]/varroa-edit-dialog.tsx
index 503a340..695b906 100644
--- a/ApiCore-Frontend/src/app/(app)/colonies/[id]/varroa-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/colonies/[id]/varroa-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateVarroaMeasurement } from "@/lib/varroa/api";
 import { VarroaMeasurement, VarroaMethod } from "@/lib/varroa/types";
 import { VARROA_METHODS, VARROA_METHOD_LABELS } from "@/lib/varroa/labels";
@@ -57,6 +58,7 @@ export function VarroaEditDialog({ measurement }: { measurement: VarroaMeasureme
       });
       setOpen(false);
     },
+    onError: () => toast.error("Varroamessung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/extractions/[id]/extraction-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/extractions/[id]/extraction-edit-dialog.tsx
index 0263e06..dc694a2 100644
--- a/ApiCore-Frontend/src/app/(app)/extractions/[id]/extraction-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/extractions/[id]/extraction-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateExtraction } from "@/lib/extractions/api";
 import { Extraction } from "@/lib/extractions/types";
 import { Button } from "@/components/ui/button";
@@ -41,6 +42,7 @@ export function ExtractionEditDialog({ extraction }: { extraction: Extraction })
       void queryClient.invalidateQueries({ queryKey: ["extractions", extraction.id] });
       setOpen(false);
     },
+    onError: () => toast.error("Schleuderung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/harvests/[id]/harvest-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/harvests/[id]/harvest-edit-dialog.tsx
index 15021d3..6de76a6 100644
--- a/ApiCore-Frontend/src/app/(app)/harvests/[id]/harvest-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/harvests/[id]/harvest-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateHarvest } from "@/lib/harvests/api";
 import { Harvest } from "@/lib/harvests/types";
 import { Button } from "@/components/ui/button";
@@ -43,6 +44,7 @@ export function HarvestEditDialog({ harvest }: { harvest: Harvest }) {
       void queryClient.invalidateQueries({ queryKey: ["harvests", harvest.id] });
       setOpen(false);
     },
+    onError: () => toast.error("Ernte konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/extraction-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/extraction-edit-dialog.tsx
index a53d1de..2df2e18 100644
--- a/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/extraction-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/extraction-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { fetchExtraction, updateExtraction } from "@/lib/extractions/api";
 import { Extraction } from "@/lib/extractions/types";
 import { Button } from "@/components/ui/button";
@@ -54,6 +55,7 @@ function ExtractionEditForm({
       });
       onSaved();
     },
+    onError: () => toast.error("Schleuderung konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/honey-batch-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/honey-batch-edit-dialog.tsx
index a019839..7f04836 100644
--- a/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/honey-batch-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/honey-batches/[id]/honey-batch-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateHoneyBatch } from "@/lib/honey-batches/api";
 import { HoneyBatch } from "@/lib/honey-batches/types";
 import { Button } from "@/components/ui/button";
@@ -36,6 +37,7 @@ export function HoneyBatchEditDialog({ honeyBatch }: { honeyBatch: HoneyBatch })
       void queryClient.invalidateQueries({ queryKey: ["honey-batches"] });
       setOpen(false);
     },
+    onError: () => toast.error("Honigcharge konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/products/edit-product-dialog.tsx b/ApiCore-Frontend/src/app/(app)/products/edit-product-dialog.tsx
index fb87d4e..03e0827 100644
--- a/ApiCore-Frontend/src/app/(app)/products/edit-product-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/products/edit-product-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateProduct } from "@/lib/products/api";
 import { Product } from "@/lib/products/types";
 import { Button } from "@/components/ui/button";
@@ -42,6 +43,7 @@ export function EditProductDialog({ product }: { product: Product }) {
       void queryClient.invalidateQueries({ queryKey: ["products"] });
       setOpen(false);
     },
+    onError: () => toast.error("Produkt konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/queens/[id]/assign-colony-dialog.tsx b/ApiCore-Frontend/src/app/(app)/queens/[id]/assign-colony-dialog.tsx
index b93a07a..c652cc5 100644
--- a/ApiCore-Frontend/src/app/(app)/queens/[id]/assign-colony-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/queens/[id]/assign-colony-dialog.tsx
@@ -2,6 +2,7 @@
 
 import { FormEvent, useState } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { assignQueenColony } from "@/lib/queens/api";
 import { QUEEN_UNAVAILABLE_STATUSES } from "@/lib/queens/labels";
 import { QueenStatus } from "@/lib/queens/types";
@@ -44,6 +45,7 @@ export function AssignColonyDialog({
       void queryClient.invalidateQueries({ queryKey: ["queens", queenId, "history"] });
       setOpen(false);
     },
+    onError: () => toast.error("Volk konnte nicht zugewiesen werden"),
   });
 
   return (
diff --git a/ApiCore-Frontend/src/app/(app)/queens/[id]/queen-edit-card.tsx b/ApiCore-Frontend/src/app/(app)/queens/[id]/queen-edit-card.tsx
index 95bea58..e4e7dc9 100644
--- a/ApiCore-Frontend/src/app/(app)/queens/[id]/queen-edit-card.tsx
+++ b/ApiCore-Frontend/src/app/(app)/queens/[id]/queen-edit-card.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Crown } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { fetchQueens, updateQueen } from "@/lib/queens/api";
 import { suggestMarkingColorForYear } from "@/lib/queens/marking-color";
 import { Queen, QueenStatus } from "@/lib/queens/types";
@@ -80,6 +81,7 @@ export function QueenEditCard({ queen }: { queen: Queen }) {
       void queryClient.invalidateQueries({ queryKey: ["queens"] });
       void queryClient.invalidateQueries({ queryKey: ["queens", queen.id] });
     },
+    onError: () => toast.error("Königin konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/storage/edit-stock-item-dialog.tsx b/ApiCore-Frontend/src/app/(app)/storage/edit-stock-item-dialog.tsx
index 7515a87..1335a6e 100644
--- a/ApiCore-Frontend/src/app/(app)/storage/edit-stock-item-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/storage/edit-stock-item-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateStockItem } from "@/lib/storage/api";
 import { StockCategory, StockItem } from "@/lib/storage/types";
 import { STOCK_CATEGORIES, STOCK_CATEGORY_LABELS } from "@/lib/storage/labels";
@@ -48,6 +49,7 @@ export function EditStockItemDialog({ item }: { item: StockItem }) {
       void queryClient.invalidateQueries({ queryKey: ["stock-items"] });
       setOpen(false);
     },
+    onError: () => toast.error("Lagerartikel konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/storage/edit-storage-container-dialog.tsx b/ApiCore-Frontend/src/app/(app)/storage/edit-storage-container-dialog.tsx
index a3a7c84..cc62529 100644
--- a/ApiCore-Frontend/src/app/(app)/storage/edit-storage-container-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/storage/edit-storage-container-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateStorageContainer } from "@/lib/storage/api";
 import { StorageContainer } from "@/lib/storage/types";
 import { Button } from "@/components/ui/button";
@@ -35,6 +36,7 @@ export function EditStorageContainerDialog({ container }: { container: StorageCo
       void queryClient.invalidateQueries({ queryKey: ["storage-containers"] });
       setOpen(false);
     },
+    onError: () => toast.error("Lagerbehälter konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {
diff --git a/ApiCore-Frontend/src/app/(app)/tasks/task-edit-dialog.tsx b/ApiCore-Frontend/src/app/(app)/tasks/task-edit-dialog.tsx
index 951c9fa..f3b7f24 100644
--- a/ApiCore-Frontend/src/app/(app)/tasks/task-edit-dialog.tsx
+++ b/ApiCore-Frontend/src/app/(app)/tasks/task-edit-dialog.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useState } from "react";
 import { Pencil } from "lucide-react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { toast } from "sonner";
 import { updateTask } from "@/lib/tasks/api";
 import { Task, TaskPriority } from "@/lib/tasks/types";
 import { TASK_PRIORITIES, TASK_PRIORITY_LABELS } from "@/lib/tasks/labels";
@@ -57,6 +58,7 @@ export function TaskEditDialog({ task }: { task: Task }) {
       void queryClient.invalidateQueries({ queryKey: ["tasks"] });
       setOpen(false);
     },
+    onError: () => toast.error("Aufgabe konnte nicht gespeichert werden"),
   });
 
   function handleSubmit(event: FormEvent<HTMLFormElement>) {