diff --git a/app/app/lib/mailer.server.ts b/app/app/lib/mailer.server.ts
index bfa14e9..7623c90 100644
--- a/app/app/lib/mailer.server.ts
+++ b/app/app/lib/mailer.server.ts
@@ -118,7 +118,7 @@ export async function sendMerchantNotification(params: {
   customerEmail: string;
   orderUrl: string;
   transmittedAt: string;
-  returnStatus: "created" | "no_returnable" | "error";
+  returnStatus: "created" | "no_returnable" | "exists" | "error";
 }): Promise<ReceiptResult> {
   const transport = buildTransport();
   if (!transport) {
@@ -128,9 +128,11 @@ export async function sendMerchantNotification(params: {
   const actionLine =
     params.returnStatus === "created"
       ? "E' stato creato un reso nell'ordine: gestiscilo dalla pagina dell'ordine."
-      : params.returnStatus === "no_returnable"
-        ? "L'ordine non risulta evaso: valuta annullamento o rimborso."
-        : "Reso non creato automaticamente: verifica manualmente l'ordine.";
+      : params.returnStatus === "exists"
+        ? "Esiste gia' un reso per questo ordine: gestiscilo dalla pagina dell'ordine."
+        : params.returnStatus === "no_returnable"
+          ? "L'ordine non risulta evaso: valuta annullamento o rimborso."
+          : "Reso non creato automaticamente: verifica manualmente l'ordine.";
 
   const orderBtn = /^https?:\/\//i.test(params.orderUrl)
     ? `<p style="margin:16px 0 0;"><a href="${escM(params.orderUrl)}" style="display:inline-block;padding:10px 18px;background:#1a1a1a;color:#fff;text-decoration:none;border-radius:8px;font-size:14px;font-weight:600;">Apri l'ordine</a></p>`
diff --git a/app/app/lib/recesso.server.ts b/app/app/lib/recesso.server.ts
index cca9e56..0725b29 100644
--- a/app/app/lib/recesso.server.ts
+++ b/app/app/lib/recesso.server.ts
@@ -356,6 +356,9 @@ export async function getShopInfo(admin: AdminApiContext): Promise<ShopInfo> {
 const RETURNABLE_QUERY = `#graphql
   query recessoOrderFulfillments($orderId: ID!) {
     order(id: $orderId) {
+      returns(first: 1) {
+        edges { node { id } }
+      }
       fulfillments(first: 10) {
         fulfillmentLineItems(first: 50) {
           edges {
@@ -380,6 +383,7 @@ const RETURN_CREATE_MUTATION = `#graphql
 interface ReturnableGraphQL {
   data?: {
     order?: {
+      returns?: { edges?: Array<unknown> | null } | null;
       fulfillments?: Array<{
         fulfillmentLineItems?: {
           edges?: Array<{
@@ -402,6 +406,7 @@ interface ReturnCreateGraphQL {
 export type ReturnCreation =
   | { status: "created"; returnId: string }
   | { status: "no_returnable" }
+  | { status: "exists" } // esiste gia' un reso per l'ordine
   | { status: "error"; error: string };
 
 /**
@@ -418,6 +423,10 @@ export async function createShopifyReturn(
       variables: { orderId: orderGid },
     });
     const qBody = (await qRes.json()) as ReturnableGraphQL;
+    // Se esiste gia' un reso per l'ordine, non crearne un altro (evita errore fuorviante).
+    if ((qBody.data?.order?.returns?.edges ?? []).length > 0) {
+      return { status: "exists" };
+    }
     const returnLineItems: Array<{
       fulfillmentLineItemId: string;
       quantity: number;
diff --git a/app/app/routes/proxy.tsx b/app/app/routes/proxy.tsx
index 1c6aae5..7cc8f19 100644
--- a/app/app/routes/proxy.tsx
+++ b/app/app/routes/proxy.tsx
@@ -426,7 +426,8 @@ export const action = async ({ request }: ActionFunctionArgs) => {
       // (best-effort; il recesso legale e' gia' registrato). Ordini annullati/
       // rimborsati -> skip (G5: evita doppio reso/rimborso). Non evaso -> il
       // merchant gestisce annullo/rimborso.
-      let returnStatus: "created" | "no_returnable" | "error" = "error";
+      let returnStatus: "created" | "no_returnable" | "exists" | "error" =
+        "error";
       const orderClosed =
         !!match.cancelledAt ||
         match.financialStatus === "REFUNDED" ||
@@ -464,6 +465,14 @@ export const action = async ({ request }: ActionFunctionArgs) => {
                 detail: "ordine non evaso o nulla da rendere",
               },
             });
+          } else if (ret.status === "exists") {
+            await db.auditLog.create({
+              data: {
+                shop,
+                event: "shopify_return_exists",
+                detail: match.orderName,
+              },
+            });
           } else {
             console.error("[recesso] returnCreate:", ret.error);
             await db.auditLog.create({