diff --git a/client/src/components/CustomerOrderForm.tsx b/client/src/components/CustomerOrderForm.tsx
index a008779..9bffb40 100644
--- a/client/src/components/CustomerOrderForm.tsx
+++ b/client/src/components/CustomerOrderForm.tsx
@@ -158,19 +158,22 @@ export function CustomerOrderForm({
 
   // Lookup API ffnancy par gencode ou référence
   const [articleLookupLoading, setArticleLookupLoading] = useState(false);
+  const [articleNotFound, setArticleNotFound] = useState(false);
   const lookupDebounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
   const gencodeValue = form.watch("gencode");
   const referenceValue = form.watch("productReference");
 
   const fetchAndFillArticle = async (params: URLSearchParams) => {
     setArticleLookupLoading(true);
+    setArticleNotFound(false);
     try {
       const res = await fetch(`/api/ffnancy/articles?${params}&limit=1`, { credentials: 'include' });
-      if (!res.ok) return;
+      if (!res.ok) { setArticleNotFound(true); return; }
       const data = await res.json();
       const article = data.articles?.[0];
-      if (!article) return;
+      if (!article) { setArticleNotFound(true); return; }
 
+      setArticleNotFound(false);
       form.setValue("productName", article.libelle1, { shouldValidate: true });
       if (article.gtin) form.setValue("gencode", article.gtin, { shouldValidate: true });
       if (article.codein) form.setValue("productReference", article.codein, { shouldValidate: true });
@@ -198,27 +201,25 @@ export function CustomerOrderForm({
         );
         if (matched) form.setValue("supplierId", matched.id, { shouldValidate: true });
       }
-    } catch { /* best-effort */ } finally {
+    } catch { setArticleNotFound(true); } finally {
       setArticleLookupLoading(false);
     }
   };
 
   useEffect(() => {
-    if (!gencodeValue || gencodeValue.length < 8) return;
+    if (!gencodeValue || gencodeValue.length < 8) { setArticleNotFound(false); return; }
     if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current);
     lookupDebounceRef.current = setTimeout(() => {
-      const p = new URLSearchParams({ ean: gencodeValue });
-      fetchAndFillArticle(p);
+      fetchAndFillArticle(new URLSearchParams({ ean: gencodeValue }));
     }, 600);
     return () => { if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current); };
   }, [gencodeValue]);
 
   useEffect(() => {
-    if (!referenceValue || referenceValue.length < 3) return;
+    if (!referenceValue || referenceValue.length < 3) { setArticleNotFound(false); return; }
     if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current);
     lookupDebounceRef.current = setTimeout(() => {
-      const p = new URLSearchParams({ codein: referenceValue });
-      fetchAndFillArticle(p);
+      fetchAndFillArticle(new URLSearchParams({ codein: referenceValue }));
     }, 600);
     return () => { if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current); };
   }, [referenceValue]);
@@ -425,26 +426,26 @@ export function CustomerOrderForm({
             {/* Case "Client appelé" cachée pour nouvelles commandes */}
         </div>
 
+        {/* Produit non référencé */}
+        {articleNotFound && (
+          <div className="flex items-center gap-2 rounded-md border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700">
+            <span className="font-medium">Produit non référencé</span> — ce produit n'existe pas dans la base. La commande ne peut pas être créée.
+          </div>
+        )}
+
         {/* Actions */}
         <div className="flex justify-end space-x-3 pt-4">
-          <Button 
-            type="button" 
-            variant="outline" 
+          <Button
+            type="button"
+            variant="outline"
             onClick={onCancel}
             disabled={isLoading}
           >
             Annuler
           </Button>
-          <Button 
+          <Button
             type="submit"
-            disabled={isLoading}
-            onClick={(e) => {
-              console.log("Submit button clicked");
-              console.log("Form state:", form.formState);
-              console.log("Form values:", form.getValues());
-              console.log("Form validation errors:", form.formState.errors);
-              console.log("Current user context:", user?.userGroups, "available groups:", groups);
-            }}
+            disabled={isLoading || articleNotFound || articleLookupLoading}
           >
             {isLoading ? "Enregistrement..." : order ? "Modifier" : "Créer"}
           </Button>
diff --git a/client/src/pages/mobile/CustomerOrdersPage.tsx b/client/src/pages/mobile/CustomerOrdersPage.tsx
index 37bf532..4ec112f 100644
--- a/client/src/pages/mobile/CustomerOrdersPage.tsx
+++ b/client/src/pages/mobile/CustomerOrdersPage.tsx
@@ -160,19 +160,22 @@ export default function MobileCustomerOrdersPage() {
 
     // Lookup API ffnancy par gencode ou référence
     const [articleLookupLoading, setArticleLookupLoading] = useState(false);
+    const [articleNotFound, setArticleNotFound] = useState(false);
     const lookupDebounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
     const gencodeValue = form.watch("gencode");
     const referenceValue = form.watch("productReference");
 
     const fetchAndFillArticle = async (params: URLSearchParams) => {
         setArticleLookupLoading(true);
+        setArticleNotFound(false);
         try {
             const res = await fetch(`/api/ffnancy/articles?${params}&limit=1`, { credentials: 'include' });
-            if (!res.ok) return;
+            if (!res.ok) { setArticleNotFound(true); return; }
             const data = await res.json();
             const article = data.articles?.[0];
-            if (!article) return;
+            if (!article) { setArticleNotFound(true); return; }
 
+            setArticleNotFound(false);
             form.setValue("productName", article.libelle1, { shouldValidate: true });
             if (article.gtin) form.setValue("gencode", article.gtin, { shouldValidate: true });
             if (article.codein) form.setValue("productReference", article.codein, { shouldValidate: true });
@@ -199,13 +202,13 @@ export default function MobileCustomerOrdersPage() {
                 );
                 if (matched) form.setValue("supplierId", matched.id, { shouldValidate: true });
             }
-        } catch { /* best-effort */ } finally {
+        } catch { setArticleNotFound(true); } finally {
             setArticleLookupLoading(false);
         }
     };
 
     useEffect(() => {
-        if (!gencodeValue || gencodeValue.length < 8) return;
+        if (!gencodeValue || gencodeValue.length < 8) { setArticleNotFound(false); return; }
         if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current);
         lookupDebounceRef.current = setTimeout(() => {
             fetchAndFillArticle(new URLSearchParams({ ean: gencodeValue }));
@@ -214,7 +217,7 @@ export default function MobileCustomerOrdersPage() {
     }, [gencodeValue]);
 
     useEffect(() => {
-        if (!referenceValue || referenceValue.length < 3) return;
+        if (!referenceValue || referenceValue.length < 3) { setArticleNotFound(false); return; }
         if (lookupDebounceRef.current) clearTimeout(lookupDebounceRef.current);
         lookupDebounceRef.current = setTimeout(() => {
             fetchAndFillArticle(new URLSearchParams({ codein: referenceValue }));
@@ -575,7 +578,12 @@ export default function MobileCustomerOrdersPage() {
                                 )}
                             />
 
-                            <Button type="submit" className="w-full bg-blue-600 h-12 text-lg font-bold shadow-lg mt-4" disabled={createMutation.isPending}>
+                            {articleNotFound && (
+                                <div className="rounded-md border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700">
+                                    <span className="font-medium">Produit non référencé</span> — ce produit n'existe pas dans la base. La commande ne peut pas être créée.
+                                </div>
+                            )}
+                            <Button type="submit" className="w-full bg-blue-600 h-12 text-lg font-bold shadow-lg mt-4" disabled={createMutation.isPending || articleNotFound || articleLookupLoading}>
                                 {createMutation.isPending ? "Création..." : "Valider la commande"}
                             </Button>
                         </form>