diff --git a/src/app/(dashboard)/dashboard/page.tsx b/src/app/(dashboard)/dashboard/page.tsx
index 900fa31..11e13c1 100644
--- a/src/app/(dashboard)/dashboard/page.tsx
+++ b/src/app/(dashboard)/dashboard/page.tsx
@@ -3,6 +3,7 @@
 import { Suspense, useEffect, useState } from "react";
 import { useSearchParams } from "next/navigation";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface AnalyticsPoint {
   label: string;
@@ -93,7 +94,7 @@ function DashboardContent() {
         });
         const result = await res.json();
         if (!res.ok) {
-          throw new Error(result?.responseDesc || result?.error || "Failed to load dashboard");
+          throw new Error(getBackendErrorMessage(result, "Failed to load dashboard"));
         }
         setData(result);
       } catch (err) {
diff --git a/src/app/(dashboard)/dashboard/warehouse/WarehouseForm.tsx b/src/app/(dashboard)/dashboard/warehouse/WarehouseForm.tsx
index da1c936..d8e8a16 100644
--- a/src/app/(dashboard)/dashboard/warehouse/WarehouseForm.tsx
+++ b/src/app/(dashboard)/dashboard/warehouse/WarehouseForm.tsx
@@ -3,6 +3,7 @@
 import { useEffect, useState } from "react";
 import { useRouter } from "next/navigation";
 import { COUNTRIES } from "@/lib/countries";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 export interface WarehouseFormState {
   name: string;
@@ -149,7 +150,7 @@ export function WarehouseForm({
       });
       const data = await res.json();
       if (!res.ok) {
-        setError(data?.responseDesc || data?.error || "Gagal menyimpan warehouse");
+        setError(getBackendErrorMessage(data, "Gagal menyimpan warehouse"));
         return;
       }
       setSuccess(true);
diff --git a/src/app/(dashboard)/products/[productId]/edit/page.tsx b/src/app/(dashboard)/products/[productId]/edit/page.tsx
index b4bd0e2..e1360dd 100644
--- a/src/app/(dashboard)/products/[productId]/edit/page.tsx
+++ b/src/app/(dashboard)/products/[productId]/edit/page.tsx
@@ -4,6 +4,7 @@ import { useParams, useRouter, useSearchParams } from "next/navigation";
 import { Suspense, useEffect, useRef, useState } from "react";
 import { WEIGHT_TYPES, DIMENSION_TYPES, WORLD_CURRENCIES } from "@/lib/product-options";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -236,10 +237,10 @@ function hasBackendError(result: unknown): result is { responseCode?: string; re
 }
 
 function backendErrorMessage(
-  result: { responseDesc?: string; error?: string } | null | undefined,
+  result: unknown,
   fallback: string
 ) {
-  return result?.responseDesc || result?.error || fallback;
+  return getBackendErrorMessage(result, fallback);
 }
 
 function toProductFiles(items: ApiProduct["productFiles"]): Array<{ id: string; name: string }> {
@@ -275,7 +276,7 @@ async function uploadFile(file: File) {
   const data = await res.json();
 
   if (!res.ok) {
-    throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+    throw new Error(getBackendErrorMessage(data, "Upload gagal"));
   }
 
   const fileId = data?.data?.fileId || data?.data?.id || data?.fileId || data?.id || "";
@@ -1110,8 +1111,6 @@ function EditProductPageInner() {
   const [saving, setSaving] = useState(false);
   const [saveError, setSaveError] = useState("");
   const [saveSuccess, setSaveSuccess] = useState(false);
-  const [errorLog, setErrorLog] = useState<{ request: unknown; response: unknown } | null>(null);
-  const [errorLogCopied, setErrorLogCopied] = useState(false);
 
   const [productState, setProductState] = useState<string>(isDraftParam ? "DRAFT" : "");
   const [categories, setCategories] = useState<CategoryOption[]>([]);
@@ -1352,8 +1351,6 @@ function EditProductPageInner() {
     setSaving(true);
     setSaveError("");
     setSaveSuccess(false);
-    setErrorLog(null);
-    setErrorLogCopied(false);
 
     try {
       const payload = buildPayload();
@@ -1365,7 +1362,6 @@ function EditProductPageInner() {
       });
       const result = await res.json();
       if (!res.ok || hasBackendError(result)) {
-        setErrorLog({ request: payload, response: result });
         throw new Error(backendErrorMessage(result, "Gagal menyimpan draft"));
       }
 
@@ -1383,8 +1379,6 @@ function EditProductPageInner() {
     setPublishing(true);
     setSaveError("");
     setPublishSuccess(false);
-    setErrorLog(null);
-    setErrorLogCopied(false);
 
     try {
       const payload = buildPayload("REVIEW");
@@ -1396,7 +1390,6 @@ function EditProductPageInner() {
       });
       const result = await res.json();
       if (!res.ok || hasBackendError(result)) {
-        setErrorLog({ request: payload, response: result });
         throw new Error(backendErrorMessage(result, "Gagal mempublikasikan produk"));
       }
 
@@ -1414,8 +1407,6 @@ function EditProductPageInner() {
     setSaving(true);
     setSaveError("");
     setSaveSuccess(false);
-    setErrorLog(null);
-    setErrorLogCopied(false);
 
     try {
       const payload = buildPayload("REVIEW");
@@ -1427,7 +1418,6 @@ function EditProductPageInner() {
       });
       const result = await res.json();
       if (!res.ok || hasBackendError(result)) {
-        setErrorLog({ request: payload, response: result });
         throw new Error(backendErrorMessage(result, "Gagal menyimpan produk"));
       }
 
@@ -1934,28 +1924,10 @@ function EditProductPageInner() {
             </div>
           )}
           {saveError && (
-            <div className="rounded-xl border border-error/20 bg-error-container px-4 py-3 text-sm font-semibold text-on-error-container">
-              <div className="flex items-start justify-between gap-2">
-                <div className="flex items-start gap-2">
-                  <span className="material-symbols-outlined text-error text-[18px] flex-shrink-0">error</span>
-                  <p>{saveError}</p>
-                </div>
-                {errorLog && (
-                  <button
-                    type="button"
-                    onClick={() => {
-                      navigator.clipboard.writeText(JSON.stringify(errorLog, null, 2));
-                      setErrorLogCopied(true);
-                      setTimeout(() => setErrorLogCopied(false), 2000);
-                    }}
-                    className="flex-shrink-0 flex items-center gap-1.5 text-[11px] font-black uppercase tracking-widest bg-error/10 hover:bg-error/20 text-error border border-error/30 rounded-lg px-3 py-1.5 transition-colors"
-                  >
-                    <span className="material-symbols-outlined text-[14px]">
-                      {errorLogCopied ? "check" : "content_copy"}
-                    </span>
-                    {errorLogCopied ? "Copied!" : "Copy Error Log"}
-                  </button>
-                )}
+            <div className="rounded-xl border border-error/20 bg-error-container px-4 py-3 text-sm font-semibold text-on-error-container shadow-lg">
+              <div className="flex items-start gap-2">
+                <span className="material-symbols-outlined text-error text-[18px] flex-shrink-0">error</span>
+                <p>{saveError}</p>
               </div>
             </div>
           )}
diff --git a/src/app/(dashboard)/products/new/details/page.tsx b/src/app/(dashboard)/products/new/details/page.tsx
index 7b1a641..9b2983c 100644
--- a/src/app/(dashboard)/products/new/details/page.tsx
+++ b/src/app/(dashboard)/products/new/details/page.tsx
@@ -5,8 +5,10 @@ import { useRouter } from "next/navigation";
 import { useProductDraft } from "@/lib/product-draft";
 import { useProductSubmit } from "@/lib/use-product-submit";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 const MAX_IMAGES = 8;
+const MAX_KEYWORDS = 3;
 
 function getToken() {
   if (typeof window === "undefined") return "";
@@ -95,7 +97,7 @@ function ImageSlotItem({
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const id = data?.data?.id || data?.data?.fileId || data?.fileId || "";
       if (!id) throw new Error("File id tidak ditemukan");
       onUploaded(id);
@@ -169,6 +171,7 @@ export default function ProductDetailsPage() {
   const { t } = useLanguage();
   const d = t.dashboard.productNew.details;
   const [keywordInput, setKeywordInput] = useState("");
+  const keywordLimitReached = draft.keywords.filter(Boolean).length >= MAX_KEYWORDS;
 
   // slotsCount tracks how many image slots to show (starts from existing draft state)
   const [slotsCount, setSlotsCount] = useState(() => {
@@ -220,10 +223,12 @@ export default function ProductDetailsPage() {
 
   function addKeyword() {
     const value = keywordInput.trim();
-    if (!value) return;
+    if (!value || keywordLimitReached) return;
     setDraft((prev) => ({
       ...prev,
-      keywords: prev.keywords.includes(value) ? prev.keywords : [...prev.keywords, value],
+      keywords: prev.keywords.includes(value)
+        ? prev.keywords
+        : [...prev.keywords, value].slice(0, MAX_KEYWORDS),
     }));
     setKeywordInput("");
   }
@@ -317,6 +322,7 @@ export default function ProductDetailsPage() {
               <input
                 value={keywordInput}
                 onChange={(e) => setKeywordInput(e.target.value)}
+                disabled={keywordLimitReached}
                 onKeyDown={(e) => {
                   if (e.key === "Enter") {
                     e.preventDefault();
@@ -324,16 +330,20 @@ export default function ProductDetailsPage() {
                   }
                 }}
                 placeholder={d.addKeyword}
-                className="flex-1 bg-surface-container-low border-none rounded-xl p-4 font-semibold focus:ring-2 focus:ring-primary/10"
+                className="flex-1 bg-surface-container-low border-none rounded-xl p-4 font-semibold focus:ring-2 focus:ring-primary/10 disabled:cursor-not-allowed disabled:opacity-60"
               />
               <button
                 type="button"
                 onClick={addKeyword}
-                className="px-5 py-3 rounded-xl bg-primary text-white font-black text-sm uppercase tracking-[0.12em]"
+                disabled={keywordLimitReached}
+                className="px-5 py-3 rounded-xl bg-primary text-white font-black text-sm uppercase tracking-[0.12em] disabled:cursor-not-allowed disabled:opacity-50"
               >
                 {d.addKeywordBtn}
               </button>
             </div>
+            <p className="mt-2 text-[11px] font-semibold text-on-surface-variant">
+              {d.keywordLimit}
+            </p>
             {draft.keywords.length > 0 && (
               <div className="mt-3 flex flex-wrap gap-2">
                 {draft.keywords.map((keyword) => (
diff --git a/src/app/(dashboard)/products/new/pricing/page.tsx b/src/app/(dashboard)/products/new/pricing/page.tsx
index 38d5605..a602566 100644
--- a/src/app/(dashboard)/products/new/pricing/page.tsx
+++ b/src/app/(dashboard)/products/new/pricing/page.tsx
@@ -6,6 +6,7 @@ import { useProductDraft, type ProductModelDraft, type ProductMeasurementDraft }
 import { WEIGHT_TYPES, DIMENSION_TYPES, WORLD_CURRENCIES } from "@/lib/product-options";
 import { useProductSubmit } from "@/lib/use-product-submit";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface WarehouseOption {
   id: string;
@@ -156,7 +157,7 @@ function ModelImageUpload({
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const fileId = data?.data?.id || data?.data?.fileId || data?.fileId || "";
       if (!fileId) throw new Error("File id tidak ditemukan");
       onUploaded(fileId);
diff --git a/src/app/(dashboard)/products/new/review/page.tsx b/src/app/(dashboard)/products/new/review/page.tsx
index 6df362d..0053064 100644
--- a/src/app/(dashboard)/products/new/review/page.tsx
+++ b/src/app/(dashboard)/products/new/review/page.tsx
@@ -131,10 +131,9 @@ function ReviewImage({
 export default function ProductReviewPage() {
   const router = useRouter();
   const { draft } = useProductDraft();
-  const { submit, submitting, error, errorLog, setError } = useProductSubmit();
+  const { submit, submitting, error, setError } = useProductSubmit();
   const { t } = useLanguage();
   const r = t.dashboard.productNew.review;
-  const [errorLogCopied, setErrorLogCopied] = useState(false);
   const [warehouseMap, setWarehouseMap] = useState<Record<string, string>>({});
   const galleryImageIds = draft.productImages.filter(Boolean);
   const reviewImageIds = [draft.imageId, ...galleryImageIds].filter(
@@ -164,7 +163,6 @@ export default function ProductReviewPage() {
   }, []);
 
   async function handleSaveDraft() {
-    setErrorLogCopied(false);
     try {
       await submit("DRAFT");
       router.push("/products");
@@ -174,7 +172,6 @@ export default function ProductReviewPage() {
   }
 
   async function handleSubmitForReview() {
-    setErrorLogCopied(false);
     try {
       await submit("REVIEW");
       router.push("/products/new/submitted");
@@ -487,28 +484,10 @@ export default function ProductReviewPage() {
       <div className="fixed bottom-0 left-64 right-0 bg-white/90 backdrop-blur-xl border-t border-outline-variant/10 px-10 py-5 z-40">
         <div className="w-full space-y-3">
           {error && (
-            <div className="rounded-xl border border-error/20 bg-error-container px-4 py-3 text-sm font-semibold text-on-error-container">
-              <div className="flex items-start justify-between gap-2">
-                <div className="flex items-start gap-2">
-                  <span className="material-symbols-outlined text-error text-[18px] flex-shrink-0">error</span>
-                  <p>{error}</p>
-                </div>
-                {errorLog && (
-                  <button
-                    type="button"
-                    onClick={() => {
-                      navigator.clipboard.writeText(JSON.stringify(errorLog, null, 2));
-                      setErrorLogCopied(true);
-                      setTimeout(() => setErrorLogCopied(false), 2000);
-                    }}
-                    className="flex-shrink-0 flex items-center gap-1.5 text-[11px] font-black uppercase tracking-widest bg-error/10 hover:bg-error/20 text-error border border-error/30 rounded-lg px-3 py-1.5 transition-colors"
-                  >
-                    <span className="material-symbols-outlined text-[14px]">
-                      {errorLogCopied ? "check" : "content_copy"}
-                    </span>
-                    {errorLogCopied ? r.copied : r.copyErrorLog}
-                  </button>
-                )}
+            <div className="rounded-xl border border-error/20 bg-error-container px-4 py-3 text-sm font-semibold text-on-error-container shadow-lg">
+              <div className="flex items-start gap-2">
+                <span className="material-symbols-outlined text-error text-[18px] flex-shrink-0">error</span>
+                <p>{error}</p>
               </div>
             </div>
           )}
diff --git a/src/app/(dashboard)/products/new/specifications/page.tsx b/src/app/(dashboard)/products/new/specifications/page.tsx
index 61ab036..e29ff7b 100644
--- a/src/app/(dashboard)/products/new/specifications/page.tsx
+++ b/src/app/(dashboard)/products/new/specifications/page.tsx
@@ -5,6 +5,7 @@ import { useRouter } from "next/navigation";
 import { useProductDraft } from "@/lib/product-draft";
 import { useProductSubmit } from "@/lib/use-product-submit";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 function getToken() {
   if (typeof window === "undefined") return "";
@@ -34,7 +35,7 @@ function useFileUpload(onSuccess: (fileId: string, fileName: string) => void) {
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const id = data?.data?.fileId || data?.data?.id || data?.fileId || data?.id;
       if (!id) throw new Error("File id tidak ditemukan");
       onSuccess(id, file.name);
diff --git a/src/app/(dashboard)/settings/page.tsx b/src/app/(dashboard)/settings/page.tsx
index c369193..ca5be42 100644
--- a/src/app/(dashboard)/settings/page.tsx
+++ b/src/app/(dashboard)/settings/page.tsx
@@ -2,6 +2,7 @@
 
 import { useEffect, useRef, useState } from "react";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 const API_BASE = process.env.NEXT_PUBLIC_API_URL || "";
 
@@ -51,7 +52,7 @@ function AvatarUpload({
         body: fd,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const id = data?.data?.id || data?.data?.fileId || data?.fileId || "";
       if (!id) throw new Error("File id tidak ditemukan");
       onUploaded(id, objectUrl);
@@ -151,7 +152,7 @@ function StorePhotoUpload({
         body: fd,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const id = data?.data?.id || data?.data?.fileId || data?.fileId || "";
       if (!id) throw new Error("File id tidak ditemukan");
       onUploaded(id, objectUrl);
@@ -316,7 +317,7 @@ export default function SettingsPage() {
         body: JSON.stringify(body),
       });
       const result = await res.json();
-      if (!res.ok) throw new Error(result?.responseDesc || "Gagal menyimpan profil");
+      if (!res.ok) throw new Error(getBackendErrorMessage(result, "Gagal menyimpan profil"));
 
       // Update local profile state
       setProfile((prev) => prev ? {
diff --git a/src/app/(onboarding)/onboarding/business/page.tsx b/src/app/(onboarding)/onboarding/business/page.tsx
index 1f7fd26..5533e8a 100644
--- a/src/app/(onboarding)/onboarding/business/page.tsx
+++ b/src/app/(onboarding)/onboarding/business/page.tsx
@@ -3,6 +3,7 @@
 import { useEffect, useRef, useState } from "react";
 import { useRouter } from "next/navigation";
 import { useLanguage } from "@/lib/i18n-context";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 type DocType = "NPWP" | "NIB" | "AKTA" | "OTHER";
 
@@ -454,12 +455,7 @@ export default function BusinessPage() {
         : null;
 
       if (!res.ok) {
-        const fallbackMessage =
-          data?.details ||
-          data?.error ||
-          raw ||
-          b.uploadFail;
-        throw new Error(fallbackMessage);
+        throw new Error(getBackendErrorMessage(data || raw, b.uploadFail));
       }
 
       const fileId = data?.data?.id || data?.data?.fileId || data?.fileId || "";
diff --git a/src/app/admin/categories/page.tsx b/src/app/admin/categories/page.tsx
index 117b87b..9f0c044 100644
--- a/src/app/admin/categories/page.tsx
+++ b/src/app/admin/categories/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useEffect, useState } from "react";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface CategoryRow {
   id: string;
@@ -140,7 +141,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json();
       if (!res.ok) {
-        throw new Error(data?.responseDesc || data?.error || "Gagal memuat category");
+        throw new Error(getBackendErrorMessage(data, "Gagal memuat category"));
       }
       const rows = parseCategories(data);
       setCategories(rows);
@@ -174,7 +175,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json();
       if (!res.ok) {
-        throw new Error(data?.responseDesc || data?.error || "Gagal memuat sub-category");
+        throw new Error(getBackendErrorMessage(data, "Gagal memuat sub-category"));
       }
       setSubcategories(parseSubCategories(data));
     } catch (error) {
@@ -268,11 +269,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json();
       if (!res.ok) {
-        throw new Error(
-          data?.responseDesc ||
-            data?.error ||
-            (isEditing ? "Gagal mengubah category" : "Gagal menambah category")
-        );
+        throw new Error(getBackendErrorMessage(data, isEditing ? "Gagal mengubah category" : "Gagal menambah category"));
       }
 
       await loadCategories(isEditing ? editingCategoryId : undefined);
@@ -297,7 +294,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json().catch(() => ({}));
       if (!res.ok) {
-        throw new Error(data?.responseDesc || data?.error || "Gagal menghapus category");
+        throw new Error(getBackendErrorMessage(data, "Gagal menghapus category"));
       }
 
       if (editingCategoryId === category.id) {
@@ -338,11 +335,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json();
       if (!res.ok) {
-        throw new Error(
-          data?.responseDesc ||
-            data?.error ||
-            (isEditing ? "Gagal mengubah sub-category" : "Gagal menambah sub-category")
-        );
+        throw new Error(getBackendErrorMessage(data, isEditing ? "Gagal mengubah sub-category" : "Gagal menambah sub-category"));
       }
 
       await loadSubcategories(selectedCategoryId);
@@ -367,7 +360,7 @@ export default function AdminCategoriesPage() {
       });
       const data = await res.json().catch(() => ({}));
       if (!res.ok) {
-        throw new Error(data?.responseDesc || data?.error || "Gagal menghapus sub-category");
+        throw new Error(getBackendErrorMessage(data, "Gagal menghapus sub-category"));
       }
 
       if (editingSubCategoryId === subcategory.id) {
diff --git a/src/app/admin/dashboard/page.tsx b/src/app/admin/dashboard/page.tsx
index 660ed3b..b01eb57 100644
--- a/src/app/admin/dashboard/page.tsx
+++ b/src/app/admin/dashboard/page.tsx
@@ -2,6 +2,7 @@
 
 import Link from "next/link";
 import { useEffect, useState } from "react";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface AdminQueueItem {
   id: string;
@@ -54,7 +55,7 @@ export default function AdminDashboardPage() {
         });
         const result = await res.json();
         if (!res.ok) {
-          throw new Error(result?.responseDesc || result?.error || "Failed to load admin dashboard");
+          throw new Error(getBackendErrorMessage(result, "Failed to load admin dashboard"));
         }
         setData(result);
       } catch (err) {
diff --git a/src/app/admin/news/[newsId]/edit/page.tsx b/src/app/admin/news/[newsId]/edit/page.tsx
index 4e41286..dd27e1d 100644
--- a/src/app/admin/news/[newsId]/edit/page.tsx
+++ b/src/app/admin/news/[newsId]/edit/page.tsx
@@ -3,6 +3,7 @@
 import { useParams, useRouter } from "next/navigation";
 import { useEffect, useRef, useState } from "react";
 import { resolveBackendImageUrlFromValue } from "@/lib/image-url";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface NewsForm {
   title: string;
@@ -73,7 +74,7 @@ function ImageSlot({ label, value, onUpload }: { label: string; value: string; o
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const url = extractImageUrl(data);
       if (!url) throw new Error("URL gambar tidak ditemukan");
       onUpload(url);
@@ -245,7 +246,7 @@ export default function AdminNewsEditPage() {
         body: JSON.stringify(payload),
       });
       const data = await res.json();
-      if (!res.ok) { setError(data?.responseDesc || data?.error || "Gagal memperbarui artikel"); return; }
+      if (!res.ok) { setError(getBackendErrorMessage(data, "Gagal memperbarui artikel")); return; }
       setSuccess(true);
       setTimeout(() => router.push("/admin/news"), 1500);
     } catch {
diff --git a/src/app/admin/news/new/page.tsx b/src/app/admin/news/new/page.tsx
index d91f6d2..d83ad08 100644
--- a/src/app/admin/news/new/page.tsx
+++ b/src/app/admin/news/new/page.tsx
@@ -3,6 +3,7 @@
 import { useRouter } from "next/navigation";
 import { useRef, useState } from "react";
 import { resolveBackendImageUrlFromValue } from "@/lib/image-url";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface NewsForm {
   title: string;
@@ -75,7 +76,7 @@ function ImageSlot({ label, value, onUpload }: { label: string; value: string; o
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const url = extractImageUrl(data);
       if (!url) throw new Error("URL gambar tidak ditemukan dari response");
       onUpload(url);
@@ -182,7 +183,7 @@ export default function AdminNewsNewPage() {
         body: JSON.stringify(payload),
       });
       const data = await res.json();
-      if (!res.ok) { setError(data?.responseDesc || data?.error || "Gagal menerbitkan news"); return; }
+      if (!res.ok) { setError(getBackendErrorMessage(data, "Gagal menerbitkan news")); return; }
       setSuccess(true);
       setTimeout(() => router.push("/admin/news"), 1500);
     } catch {
diff --git a/src/app/admin/places/PlaceForm.tsx b/src/app/admin/places/PlaceForm.tsx
index 9cd1c48..6e0282b 100644
--- a/src/app/admin/places/PlaceForm.tsx
+++ b/src/app/admin/places/PlaceForm.tsx
@@ -4,6 +4,7 @@ import { useRef, useEffect, useState } from "react";
 import { useRouter } from "next/navigation";
 import { COUNTRIES } from "@/lib/countries";
 import { resolveBackendImageUrlFromValue } from "@/lib/image-url";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 function extractImageUrl(data: Record<string, unknown>): string | null {
   const filename =
@@ -118,7 +119,7 @@ function ImageSlot({
         body: formData,
       });
       const data = await res.json();
-      if (!res.ok) throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+      if (!res.ok) throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       const url = extractImageUrl(data);
       if (!url) throw new Error("URL gambar tidak ditemukan");
       onUpload(url);
@@ -322,7 +323,7 @@ export function PlaceForm({
       });
       const data = await res.json();
       if (!res.ok) {
-        setError(data?.responseDesc || data?.error || "Gagal menyimpan lokasi");
+        setError(getBackendErrorMessage(data, "Gagal menyimpan lokasi"));
         return;
       }
       setSuccess(true);
diff --git a/src/app/admin/review/[productId]/page.tsx b/src/app/admin/review/[productId]/page.tsx
index b4e8c08..5e5f1bd 100644
--- a/src/app/admin/review/[productId]/page.tsx
+++ b/src/app/admin/review/[productId]/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { ProductVariantShowcase } from "@/components/product-variant-showcase";
+import { getBackendErrorMessage } from "@/lib/error-message";
 import { resolveBackendImageUrl } from "@/lib/image-url";
 import { useParams, useRouter, useSearchParams } from "next/navigation";
 import { Suspense, useEffect, useRef, useState } from "react";
@@ -908,7 +909,7 @@ function AdminReviewDetailPageInner() {
       });
       const data = await res.json();
       if (!res.ok) {
-        setActionError(data?.responseDesc || data?.error || "Gagal memproses review");
+        setActionError(getBackendErrorMessage(data, "Gagal memproses review"));
         return;
       }
       setActionSuccess(action === "accept" ? "Update produk berhasil disetujui!" : "Update produk berhasil ditolak!");
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index 284b497..0ef9684 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -2,6 +2,7 @@ import type { Metadata } from "next";
 import { Inter, Manrope } from "next/font/google";
 import "./globals.css";
 import { I18nProvider } from "@/lib/i18n-context";
+import { AuthSessionGuard } from "@/components/auth-session-guard";
 
 const inter = Inter({
   variable: "--font-inter",
@@ -60,7 +61,10 @@ export default function RootLayout({
         />
       </head>
       <body className="min-h-screen bg-background text-on-surface font-body antialiased">
-        <I18nProvider>{children}</I18nProvider>
+        <I18nProvider>
+          <AuthSessionGuard />
+          {children}
+        </I18nProvider>
       </body>
     </html>
   );
diff --git a/src/components/auth-session-guard.tsx b/src/components/auth-session-guard.tsx
new file mode 100644
index 0000000..f8aee61
--- /dev/null
+++ b/src/components/auth-session-guard.tsx
@@ -0,0 +1,121 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+import { usePathname } from "next/navigation";
+
+const AUTH_ERROR_STATUSES = new Set([401, 403]);
+const AUTH_ERROR_PATTERNS = [
+  "access denied",
+  "unauthorized",
+  "session expired",
+  "token expired",
+  "invalid token",
+];
+
+const PUBLIC_PATH_PREFIXES = [
+  "/login",
+  "/register",
+  "/forgot-password",
+  "/reset-password",
+  "/account-not-found",
+  "/help",
+  "/privacy",
+  "/terms",
+];
+
+function isPublicPath(pathname: string) {
+  return PUBLIC_PATH_PREFIXES.some(
+    (path) => pathname === path || pathname.startsWith(`${path}/`)
+  );
+}
+
+function isLocalApiRequest(input: RequestInfo | URL) {
+  if (typeof window === "undefined") return false;
+
+  const rawUrl =
+    typeof input === "string" || input instanceof URL ? input.toString() : input.url;
+  const url = new URL(rawUrl, window.location.origin);
+
+  return (
+    url.origin === window.location.origin &&
+    url.pathname.startsWith("/api/") &&
+    !url.pathname.startsWith("/api/auth/")
+  );
+}
+
+function readTextFromPayload(value: unknown): string {
+  if (!value) return "";
+  if (typeof value === "string") return value;
+  if (Array.isArray(value)) return value.map(readTextFromPayload).join(" ");
+  if (typeof value !== "object") return String(value);
+
+  return Object.values(value as Record<string, unknown>)
+    .map(readTextFromPayload)
+    .join(" ");
+}
+
+async function hasAuthErrorMessage(response: Response) {
+  try {
+    const contentType = response.headers.get("content-type") || "";
+    const clone = response.clone();
+    const text = contentType.includes("application/json")
+      ? readTextFromPayload(await clone.json())
+      : await clone.text();
+    const normalized = text.toLowerCase();
+
+    return AUTH_ERROR_PATTERNS.some((pattern) => normalized.includes(pattern));
+  } catch {
+    return false;
+  }
+}
+
+function clearSessionAndRedirect() {
+  localStorage.removeItem("token");
+  localStorage.removeItem("role");
+  sessionStorage.removeItem("token");
+  sessionStorage.removeItem("role");
+  window.location.assign("/login");
+}
+
+export function AuthSessionGuard() {
+  const pathname = usePathname();
+  const pathnameRef = useRef(pathname);
+  const redirectingRef = useRef(false);
+
+  useEffect(() => {
+    pathnameRef.current = pathname;
+  }, [pathname]);
+
+  useEffect(() => {
+    const originalFetch = window.fetch.bind(window);
+
+    window.fetch = async (input, init) => {
+      const response = await originalFetch(input, init);
+
+      if (
+        redirectingRef.current ||
+        isPublicPath(pathnameRef.current) ||
+        !isLocalApiRequest(input)
+      ) {
+        return response;
+      }
+
+      const shouldRedirect =
+        AUTH_ERROR_STATUSES.has(response.status) ||
+        (response.status >= 400 && (await hasAuthErrorMessage(response)));
+
+      if (shouldRedirect) {
+        redirectingRef.current = true;
+        clearSessionAndRedirect();
+      }
+
+      return response;
+    };
+
+    return () => {
+      window.fetch = originalFetch;
+    };
+  }, []);
+
+  return null;
+}
diff --git a/src/components/upload-field.tsx b/src/components/upload-field.tsx
index 3a535b7..ee14fd3 100644
--- a/src/components/upload-field.tsx
+++ b/src/components/upload-field.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useRef, useState } from "react";
+import { getBackendErrorMessage } from "@/lib/error-message";
 
 interface UploadFieldProps {
   label: string;
@@ -72,7 +73,7 @@ export function UploadField({
       const data = await res.json();
 
       if (!res.ok) {
-        throw new Error(data?.responseDesc || data?.error || "Upload gagal");
+        throw new Error(getBackendErrorMessage(data, "Upload gagal"));
       }
 
       const fileId = data?.data?.id || data?.data?.fileId || data?.fileId || "";
diff --git a/src/lib/error-message.ts b/src/lib/error-message.ts
new file mode 100644
index 0000000..0a15f03
--- /dev/null
+++ b/src/lib/error-message.ts
@@ -0,0 +1,42 @@
+const JSON_LIKE_START = /^[\s]*[\[{]/;
+
+function normalizeText(value: string): string {
+  const trimmed = value.trim();
+  if (!trimmed) return "";
+
+  if (JSON_LIKE_START.test(trimmed)) {
+    try {
+      return getBackendErrorMessage(JSON.parse(trimmed), "");
+    } catch {
+      return "";
+    }
+  }
+
+  return trimmed.length > 220 ? `${trimmed.slice(0, 217)}...` : trimmed;
+}
+
+export function getBackendErrorMessage(value: unknown, fallback: string): string {
+  if (typeof value === "string") {
+    return normalizeText(value) || fallback;
+  }
+
+  if (!value || typeof value !== "object") {
+    return fallback;
+  }
+
+  const data = value as Record<string, unknown>;
+  const candidates = [
+    data.responseDesc,
+    data.message,
+    data.error,
+    data.details,
+    data.data,
+  ];
+
+  for (const candidate of candidates) {
+    const message: string = getBackendErrorMessage(candidate, "");
+    if (message) return message;
+  }
+
+  return fallback;
+}
diff --git a/src/lib/product-draft.tsx b/src/lib/product-draft.tsx
index d8ef97e..fa30c8c 100644
--- a/src/lib/product-draft.tsx
+++ b/src/lib/product-draft.tsx
@@ -116,6 +116,7 @@ interface ProductDraftContextValue {
 }
 
 const STORAGE_KEY = "productWizardDraft";
+const MAX_PRODUCT_KEYWORDS = 3;
 
 const defaultDraft: ProductDraftState = {
   categoryId: "",
@@ -187,31 +188,42 @@ const defaultDraft: ProductDraftState = {
 
 const ProductDraftContext = createContext<ProductDraftContextValue | null>(null);
 
-export function ProductDraftProvider({ children }: { children: ReactNode }) {
-  const [draft, setDraft] = useState<ProductDraftState>(() => {
-    if (typeof window === "undefined") {
-      return defaultDraft;
-    }
+function normalizeDraft(stored: Partial<ProductDraftState>): ProductDraftState {
+  return {
+    ...defaultDraft,
+    ...stored,
+    keywords: Array.isArray(stored.keywords)
+      ? stored.keywords.filter(Boolean).slice(0, MAX_PRODUCT_KEYWORDS)
+      : defaultDraft.keywords,
+  };
+}
 
+export function ProductDraftProvider({ children }: { children: ReactNode }) {
+  const [draft, setDraft] = useState<ProductDraftState>(defaultDraft);
+  const [isLoaded, setIsLoaded] = useState(false);
+
+  useEffect(() => {
     const raw = sessionStorage.getItem(STORAGE_KEY);
     if (!raw) {
-      return defaultDraft;
+      setIsLoaded(true);
+      return;
     }
 
     try {
       const stored = JSON.parse(raw);
       // Merge with defaultDraft so any new fields added to the schema
       // always have a valid default value (handles stale sessionStorage).
-      return { ...defaultDraft, ...stored } as ProductDraftState;
+      setDraft(normalizeDraft(stored));
     } catch {
       sessionStorage.removeItem(STORAGE_KEY);
-      return defaultDraft;
     }
-  });
+    setIsLoaded(true);
+  }, []);
 
   useEffect(() => {
+    if (!isLoaded) return;
     sessionStorage.setItem(STORAGE_KEY, JSON.stringify(draft));
-  }, [draft]);
+  }, [draft, isLoaded]);
 
   function resetDraft() {
     setDraft(defaultDraft);
diff --git a/src/lib/translations/en.ts b/src/lib/translations/en.ts
index 0faa114..29d4480 100644
--- a/src/lib/translations/en.ts
+++ b/src/lib/translations/en.ts
@@ -474,6 +474,7 @@ export const en = {
         keywords: "Search Keywords",
         addKeyword: "Add keyword",
         addKeywordBtn: "Add",
+        keywordLimit: "Maximum 3 keywords.",
         narrative: "Product Narrative",
         narrativePlaceholder: "Describe the craftsmanship, materials, and value proposition...",
         features: "Key Product Features",
@@ -606,8 +607,6 @@ export const en = {
         warrantyType: "Warranty Type",
         warrantyDuration: "Duration",
         submitting: "Submitting...",
-        copied: "Copied!",
-        copyErrorLog: "Copy Error Log",
         saving: "Saving product...",
         autoSaved: "Auto-saved",
         saveDraft: "Save Draft",
diff --git a/src/lib/translations/id.ts b/src/lib/translations/id.ts
index bb1f6c3..d388e88 100644
--- a/src/lib/translations/id.ts
+++ b/src/lib/translations/id.ts
@@ -475,6 +475,7 @@ export const id = {
         keywords: "Kata Kunci Pencarian",
         addKeyword: "Tambah kata kunci",
         addKeywordBtn: "Tambah",
+        keywordLimit: "Maksimal 3 kata kunci.",
         narrative: "Narasi Produk",
         narrativePlaceholder: "Deskripsikan keahlian, bahan, dan nilai produk...",
         features: "Fitur Utama Produk",
@@ -607,8 +608,6 @@ export const id = {
         warrantyType: "Tipe Garansi",
         warrantyDuration: "Durasi",
         submitting: "Mengirim...",
-        copied: "Tersalin!",
-        copyErrorLog: "Salin Log Error",
         saving: "Menyimpan produk...",
         autoSaved: "Tersimpan otomatis",
         saveDraft: "Simpan Draft",
diff --git a/src/lib/use-product-submit.ts b/src/lib/use-product-submit.ts
index 014ba2d..6ae14c4 100644
--- a/src/lib/use-product-submit.ts
+++ b/src/lib/use-product-submit.ts
@@ -2,6 +2,10 @@
 
 import { useState } from "react";
 import { useProductDraft, type ProductDraftState } from "./product-draft";
+import { getBackendErrorMessage } from "./error-message";
+
+const MAX_PRODUCT_KEYWORDS = 3;
+const FALLBACK_SAVE_ERROR = "Gagal menyimpan produk";
 
 function getToken() {
   if (typeof window === "undefined") return "";
@@ -28,7 +32,7 @@ export function buildProductPayload(draft: ProductDraftState, state: "DRAFT" | "
     productImages: draft.productImages
       .filter(Boolean)
       .map((imageId, index) => ({ imageId, sequence: index + 1 })),
-    productKeyWords: draft.keywords.filter(Boolean),
+    productKeyWords: draft.keywords.filter(Boolean).slice(0, MAX_PRODUCT_KEYWORDS),
     productFeatures: draft.features.filter(Boolean),
     productModels: draft.models.map((model) => ({
       name: model.name,
@@ -107,12 +111,10 @@ export function useProductSubmit() {
   const { draft, resetDraft } = useProductDraft();
   const [submitting, setSubmitting] = useState(false);
   const [error, setError] = useState("");
-  const [errorLog, setErrorLog] = useState<{ request: unknown; response: unknown } | null>(null);
 
   async function submit(state: "DRAFT" | "REVIEW"): Promise<void> {
     setSubmitting(true);
     setError("");
-    setErrorLog(null);
     try {
       const token = getToken();
       const payload = buildProductPayload(draft, state);
@@ -123,17 +125,16 @@ export function useProductSubmit() {
       });
       const result = await res.json();
       if (!res.ok) {
-        setErrorLog({ request: payload, response: result });
-        throw new Error(result?.responseDesc || "Gagal menyimpan produk");
+        throw new Error(getBackendErrorMessage(result, FALLBACK_SAVE_ERROR));
       }
       resetDraft();
     } catch (err) {
-      setError(err instanceof Error ? err.message : "Gagal menyimpan produk");
+      setError(err instanceof Error ? err.message : FALLBACK_SAVE_ERROR);
       throw err;
     } finally {
       setSubmitting(false);
     }
   }
 
-  return { submit, submitting, error, errorLog, setError };
+  return { submit, submitting, error, setError };
 }