diff --git a/attached_assets/image_1752929659498.png b/attached_assets/image_1752929659498.png
new file mode 100644
index 0000000..eb7a055
Binary files /dev/null and b/attached_assets/image_1752929659498.png differ
diff --git a/client/src/components/NewSaleFormMultiProduct.tsx b/client/src/components/NewSaleFormMultiProduct.tsx
index 974886b..2438a9d 100644
--- a/client/src/components/NewSaleFormMultiProduct.tsx
+++ b/client/src/components/NewSaleFormMultiProduct.tsx
@@ -477,8 +477,8 @@ export default function NewSaleFormMultiProduct() {
                           </SelectTrigger>
                         </FormControl>
                         <SelectContent>
-                          {PAYMENT_METHODS.map((method) => (
-                            <SelectItem key={`payment-${method}`} value={method}>
+                          {PAYMENT_METHODS.map((method, methodIndex) => (
+                            <SelectItem key={`payment-method-${methodIndex}`} value={method}>
                               {method}
                             </SelectItem>
                           ))}
@@ -511,8 +511,8 @@ export default function NewSaleFormMultiProduct() {
                           </SelectTrigger>
                         </FormControl>
                         <SelectContent>
-                          {IDENTITY_TYPES.map((type) => (
-                            <SelectItem key={`identity-${type}`} value={type}>
+                          {IDENTITY_TYPES.map((type, typeIndex) => (
+                            <SelectItem key={`identity-type-${typeIndex}`} value={type}>
                               {type}
                             </SelectItem>
                           ))}
diff --git a/client/src/lib/validation.ts b/client/src/lib/validation.ts
index 0c9156b..e0d3c84 100644
--- a/client/src/lib/validation.ts
+++ b/client/src/lib/validation.ts
@@ -81,15 +81,15 @@ export const ARTICLE_CATEGORY_MAPPING = {
 } as const;
 
 export const IDENTITY_TYPES = [
-  { value: "CNI", label: "Carte Nationale d'Identité" },
-  { value: "Passeport", label: "Passeport" },
-  { value: "Permis de conduire", label: "Permis de conduire" }
+  "Carte Nationale d'Identité",
+  "Passeport", 
+  "Permis de conduire"
 ] as const;
 
 export const PAYMENT_METHODS = [
-  { value: "Carte Bancaire", label: "Carte Bancaire" },
-  { value: "Espèce", label: "Espèce" },
-  { value: "Chèque", label: "Chèque" },
-  { value: "Carte Cadeau", label: "Carte Cadeau" },
-  { value: "Autre", label: "Autre" }
+  "Carte Bancaire",
+  "Espèce",
+  "Chèque", 
+  "Carte Cadeau",
+  "Autre"
 ] as const;