diff --git a/src/app/api/products/search-sheets/route.ts b/src/app/api/products/search-sheets/route.ts
index 062d7b3..3320da7 100644
--- a/src/app/api/products/search-sheets/route.ts
+++ b/src/app/api/products/search-sheets/route.ts
@@ -50,9 +50,10 @@ export async function GET(req: NextRequest) {
         const refLower = ref.toLowerCase()
         const ugsLower = ugs.toLowerCase()
         const wordBoundary = new RegExp(`(^|[^a-z0-9])${ugsLower.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}([^a-z0-9]|$)`)
-        const isMatch = ugs && shopifyId && wordBoundary.test(refLower)
+        // Ne requiert pas shopifyId pour le match UGS — ID peut être absent si produit externe
+        const isMatch = ugs && wordBoundary.test(refLower)
 
-        if (isMatch) {
+        if (isMatch && shopifyId) {
           const title = (row[3] ?? '').trim()
           if (!bestMatch || ugs.length > bestMatch.ugsLength) {
             bestMatch = { shopifyId, title, ugsLength: ugs.length }
diff --git a/src/lib/shopify.ts b/src/lib/shopify.ts
index 56d50e5..3e6cc5e 100644
--- a/src/lib/shopify.ts
+++ b/src/lib/shopify.ts
@@ -27,29 +27,36 @@ export type ShopifyProductResult =
 export async function searchProductByRef(ref: string): Promise<ShopifyProductResult> {
   const { baseUrl, headers } = getConfig()
 
-  // Recherche par SKU via l'API variants
+  // Recherche par SKU via l'API GraphQL (supporte les SKUs avec tirets, contrairement au REST)
+  const graphqlUrl = `https://${process.env.SHOPIFY_STORE_DOMAIN}/admin/api/${API_VERSION}/graphql.json`
   const searchBySku = async (sku: string): Promise<ShopifyProductResult> => {
-    const res = await fetch(
-      `${baseUrl}/variants.json?sku=${encodeURIComponent(sku)}&fields=id,sku,product_id&limit=1`,
-      { headers },
-    )
+    const query = `{
+      productVariants(first: 10, query: "sku:${sku.replace(/"/g, '')}") {
+        edges {
+          node {
+            sku
+            product { id legacyResourceId title }
+          }
+        }
+      }
+    }`
+    const res = await fetch(graphqlUrl, {
+      method: 'POST',
+      headers,
+      body: JSON.stringify({ query }),
+    })
     if (!res.ok) return { found: false }
     const data = await res.json()
-    const variants = (data.variants ?? []) as Array<{ id: number; sku: string; product_id: number }>
-    const match = variants.find(v => v.sku === sku)
-    if (!match) return { found: false }
-
-    // Récupère le titre du produit
-    const productRes = await fetch(
-      `${baseUrl}/products/${match.product_id}.json?fields=id,title`,
-      { headers },
+    const edges = data?.data?.productVariants?.edges ?? []
+    // Cherche le match exact (insensible à la casse) parmi les résultats
+    const match = edges.find((e: { node: { sku: string } }) =>
+      e.node.sku.toLowerCase() === sku.toLowerCase()
     )
-    if (!productRes.ok) return { found: false }
-    const productData = await productRes.json()
+    if (!match) return { found: false }
     return {
       found: true,
-      shopifyId: String(match.product_id),
-      title: productData.product?.title ?? sku,
+      shopifyId: match.node.product.legacyResourceId,
+      title: match.node.product.title,
     }
   }