diff --git a/client/src/components/dms-customer-selector/dms-customer-selector.component.jsx b/client/src/components/dms-customer-selector/dms-customer-selector.component.jsx
index 6a6903880..dcfbad6d4 100644
--- a/client/src/components/dms-customer-selector/dms-customer-selector.component.jsx
+++ b/client/src/components/dms-customer-selector/dms-customer-selector.component.jsx
@@ -1,5 +1,5 @@
 import { useSplitTreatments } from "@splitsoftware/splitio-react";
-import { Button, Checkbox, Col, message, Table } from "antd";
+import { Alert, Button, Checkbox, Col, message, Table } from "antd";
 import { useEffect, useMemo, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { connect } from "react-redux";
@@ -26,7 +26,9 @@ function normalizeRrList(list) {
         row.name ||
         [row.CustomerName?.FirstName, row.CustomerName?.LastName].filter(Boolean).join(" ").trim() ||
         (custNo ? String(custNo) : "");
-      return custNo ? { custNo: String(custNo), name } : null;
+      if (!custNo) return null;
+      const vinOwner = !!(row.vinOwner ?? row.isVehicleOwner);
+      return { custNo: String(custNo), name, vinOwner };
     })
     .filter(Boolean);
 }
@@ -49,14 +51,29 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
   const { socket: wsssocket } = useSocket();
   const dms = useMemo(() => determineDmsType(bodyshop), [bodyshop]);
 
+  // --- owner set (RR only) ---
+  const rrOwnerSet = useMemo(() => {
+    return new Set(
+      (Array.isArray(customerList) ? customerList : [])
+        .filter((c) => c?.vinOwner || c?.isVehicleOwner)
+        .map((c) => String(c.custNo))
+    );
+  }, [customerList]);
+  const rrHasVinOwner = rrOwnerSet.size > 0;
+
   useEffect(() => {
     // RR takes precedence
     if (dms === "rr") {
       const handleRrSelectCustomer = (list) => {
+        const normalized = normalizeRrList(list);
+
         setOpen(true);
         setDmsType("rr");
-        setcustomerList(normalizeRrList(list));
-        setSelectedCustomer(null);
+        setcustomerList(normalized);
+
+        // PRESELECT VIN OWNER (first one if multiple)
+        const firstOwner = normalized.find((r) => r.vinOwner)?.custNo;
+        setSelectedCustomer(firstOwner ? String(firstOwner) : null);
       };
 
       wsssocket.on("rr-select-customer", handleRrSelectCustomer);
@@ -98,14 +115,30 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
     }
   }, [dms, Fortellis?.treatment, wsssocket]);
 
+  // Safety: if owner info arrives later or list changes, keep the owner preselected.
+  useEffect(() => {
+    if (dmsType !== "rr" || !rrHasVinOwner) return;
+    const firstOwner = (customerList.find((c) => c.vinOwner) || {}).custNo;
+    if (firstOwner && String(selectedCustomer) !== String(firstOwner)) {
+      setSelectedCustomer(String(firstOwner));
+    }
+  }, [dmsType, rrHasVinOwner, customerList]);
+
   const onUseSelected = () => {
     if (!selectedCustomer) {
       message.warning(t("general.actions.select"));
       return;
     }
 
+    // If there is a VIN owner, only allow owner selection
+    if (dmsType === "rr" && rrHasVinOwner && !rrOwnerSet.has(String(selectedCustomer))) {
+      message.warning(
+        "This VIN is already assigned in Reynolds. Only the VIN owner can be selected. To choose a different customer, change ownership in Reynolds first."
+      );
+      return;
+    }
+
     if (dmsType === "rr") {
-      // RR now mirrors others: send selection and close
       wsssocket.emit("rr-selected-customer", { jobId: jobid, custNo: String(selectedCustomer) }, (ack) => {
         if (ack?.ok) {
           setOpen(false);
@@ -127,6 +160,7 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
   };
 
   const onUseGeneric = () => {
+    if (dmsType === "rr" && rrHasVinOwner) return;
     const generic = bodyshop.cdk_configuration?.generic_customer_number || null;
     if (dmsType === "rr") {
       if (generic) {
@@ -146,11 +180,11 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
   };
 
   const onCreateNew = () => {
-    // Exact parity with Fortellis: ask server to create immediately
+    if (dmsType === "rr" && rrHasVinOwner) return;
+
     if (dmsType === "rr") {
       wsssocket.emit("rr-selected-customer", { jobId: jobid, create: true }, (ack) => {
         if (ack?.ok) {
-          // Optionally preselect returned custNo
           if (ack.custNo) setSelectedCustomer(String(ack.custNo));
           setOpen(false);
           message.success(t("dms.messages.customerCreated"));
@@ -161,7 +195,6 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
       return;
     }
 
-    // Non-RR unchanged
     setOpen(false);
     if (Fortellis.treatment === "on") {
       wsssocket.emit("fortellis-selected-customer", { selectedCustomerId: null, jobid });
@@ -245,7 +278,18 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
 
   const rrColumns = [
     { title: t("jobs.fields.dms.id"), dataIndex: "custNo", key: "custNo" },
-    { title: t("jobs.fields.dms.name1"), dataIndex: "name", key: "name", sorter: (a, b) => alphaSort(a?.name, b?.name) }
+    {
+      title: t("jobs.fields.dms.name1"),
+      dataIndex: "name",
+      key: "name",
+      sorter: (a, b) => alphaSort(a?.name, b?.name)
+    },
+    {
+      title: t("jobs.fields.dms.vinowner"),
+      dataIndex: "vinOwner",
+      key: "vinOwner",
+      render: (_t, r) => <Checkbox disabled checked={!!(r.vinOwner ?? r.isVehicleOwner)} />
+    }
   ];
 
   if (!open) return null;
@@ -266,18 +310,40 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
         ? (record) => record.id?.value || record.customerId
         : (record) => record.ContactId;
 
+  const rrDisableRow = (record) => {
+    if (dmsType !== "rr") return false;
+    if (!rrHasVinOwner) return false;
+    return !rrOwnerSet.has(String(record.custNo));
+  };
+
   return (
     <Col span={24}>
       <Table
         title={() => (
-          <div>
-            <Button onClick={onUseSelected} disabled={!selectedCustomer}>
-              {t("jobs.actions.dms.useselected")}
-            </Button>
-            <Button onClick={onUseGeneric} disabled={!bodyshop.cdk_configuration?.generic_customer_number}>
-              {t("jobs.actions.dms.usegeneric")}
-            </Button>
-            <Button onClick={onCreateNew}>{t("jobs.actions.dms.createnewcustomer")}</Button>
+          <div style={{ display: "flex", flexDirection: "column", gap: 8 }}>
+            <div style={{ display: "flex", gap: 8, flexWrap: "wrap" }}>
+              <Button onClick={onUseSelected} disabled={!selectedCustomer}>
+                {t("jobs.actions.dms.useselected")}
+              </Button>
+              <Button
+                onClick={onUseGeneric}
+                disabled={dmsType === "rr" ? rrHasVinOwner : !bodyshop.cdk_configuration?.generic_customer_number}
+              >
+                {t("jobs.actions.dms.usegeneric")}
+              </Button>
+              <Button onClick={onCreateNew} disabled={dmsType === "rr" ? rrHasVinOwner : false}>
+                {t("jobs.actions.dms.createnewcustomer")}
+              </Button>
+            </div>
+
+            {dmsType === "rr" && rrHasVinOwner && (
+              <Alert
+                type="warning"
+                showIcon
+                message="VIN ownership enforced"
+                description="This VIN is already assigned in Reynolds. Only the VIN owner is selectable here. To use a different customer, please change the vehicle ownership in Reynolds first, then return to complete the export."
+              />
+            )}
           </div>
         )}
         pagination={{ position: "top" }}
@@ -295,7 +361,10 @@ export function DmsCustomerSelector({ bodyshop, jobid }) {
             setSelectedCustomer(key ? String(key) : null);
           },
           type: "radio",
-          selectedRowKeys: selectedCustomer ? [selectedCustomer] : []
+          selectedRowKeys: selectedCustomer ? [selectedCustomer] : [],
+          getCheckboxProps: (record) => ({
+            disabled: rrDisableRow(record)
+          })
         }}
       />
     </Col>
diff --git a/server/rr/rr-utils.js b/server/rr/rr-utils.js
index 6da1caf15..0569b20f7 100644
--- a/server/rr/rr-utils.js
+++ b/server/rr/rr-utils.js
@@ -46,6 +46,7 @@ const makeVehicleSearchPayloadFromJob = (job) => {
 
 /**
  * Normalize customer candidates from VIN blocks
+ * Adds `vinOwner` (and keeps `isVehicleOwner` for backward compat).
  * @param res
  * @param ownersSet
  * @returns {any[]}
@@ -66,19 +67,27 @@ const normalizeCustomerCandidates = (res, { ownersSet = null } = {}) => {
 
     for (const custNo of custNos) {
       const cno = String(custNo).trim();
-      const item = { custNo: cno, name: name || `Customer ${cno}` };
-      if (ownersSet && ownersSet.has(cno)) item.isVehicleOwner = true;
+      const isOwner = !!(ownersSet && ownersSet.has(cno));
+      const item = {
+        custNo: cno,
+        name: name || `Customer ${cno}`,
+        vinOwner: isOwner,
+        isVehicleOwner: isOwner // legacy key kept for any older FE code
+      };
       out.push(item);
     }
   }
-  // Dedup by custNo, keep isVehicleOwner if any
+  // Dedup by custNo, keep vinOwner/isVehicleOwner if any
   const seen = new Map();
   for (const c of out) {
     const key = (c.custNo || "").trim();
     if (!key) continue;
     const prev = seen.get(key);
-    if (!prev) seen.set(key, c);
-    else if (c.isVehicleOwner && !prev.isVehicleOwner) seen.set(key, { ...prev, isVehicleOwner: true });
+    if (!prev) {
+      seen.set(key, c);
+    } else if ((c.vinOwner || c.isVehicleOwner) && !(prev.vinOwner || prev.isVehicleOwner)) {
+      seen.set(key, { ...prev, vinOwner: true, isVehicleOwner: true });
+    }
   }
   return Array.from(seen.values());
 };
diff --git a/server/web-sockets/rr-register-socket-events.js b/server/web-sockets/rr-register-socket-events.js
index 81a38543f..a43d97426 100644
--- a/server/web-sockets/rr-register-socket-events.js
+++ b/server/web-sockets/rr-register-socket-events.js
@@ -119,9 +119,8 @@ async function rrMultiCustomerSearch({ bodyshop, job, socket, redisHelpers }) {
     try {
       CreateRRLogEvent(socket, "DEBUG", `{RR-SEARCH} Executing ${q.kind} query`, { q });
       const res = await rrCombinedSearch(bodyshop, q);
-
       if (fromVin) {
-        const blocks = Array.isArray(res?.data) ? res.data : [];
+        const blocks = Array.isArray(res?.data) ? res.data : Array.isArray(res) ? res : [];
         ownersSet = ownersFromVinBlocks(blocks, job?.v_vin);
         try {
           await redisHelpers.setSessionTransactionData(
@@ -132,7 +131,7 @@ async function rrMultiCustomerSearch({ bodyshop, job, socket, redisHelpers }) {
             defaultRRTTL
           );
         } catch {
-          //
+          /* ignore cache write issues */
         }
       }
 
@@ -159,17 +158,19 @@ function registerRREvents({ socket, redisHelpers }) {
       let ownersSet = null;
 
       if ((params?.kind || "").toLowerCase() === "vin") {
-        const blocks = Array.isArray(res?.data) ? res.data : [];
+        const blocks = Array.isArray(res?.data) ? res.data : Array.isArray(res) ? res : [];
         ownersSet = ownersFromVinBlocks(blocks);
       }
 
       const normalized = sortVehicleOwnerFirst(normalizeCustomerCandidates(res, { ownersSet }));
       const rid = resolveJobId(jobid, { jobid }, null);
 
-      cb?.({ jobid: rid, data: normalized });
-      socket.emit("rr-select-customer", normalized);
+      const decorated = normalized.map((c) => (c.vinOwner != null ? c : { ...c, vinOwner: !!c.isVehicleOwner }));
+
+      cb?.({ jobid: rid, data: decorated });
+      socket.emit("rr-select-customer", decorated);
       CreateRRLogEvent(socket, "DEBUG", "rr-lookup-combined: emitted rr-select-customer", {
-        count: normalized.length
+        count: decorated.length
       });
     } catch (e) {
       CreateRRLogEvent(socket, "ERROR", "RR combined lookup error", { error: e.message, jobid });
@@ -318,10 +319,11 @@ function registerRREvents({ socket, redisHelpers }) {
       CreateRRLogEvent(socket, "DEBUG", `{2} Running multi-search (Full Name + VIN)`);
       const candidates = await rrMultiCustomerSearch({ bodyshop, job, socket, redisHelpers });
 
-      socket.emit("rr-select-customer", candidates);
+      const decorated = candidates.map((c) => (c.vinOwner != null ? c : { ...c, vinOwner: !!c.isVehicleOwner }));
+      socket.emit("rr-select-customer", decorated);
       CreateRRLogEvent(socket, "DEBUG", `{2.1} Emitted rr-select-customer`, {
-        count: candidates.length,
-        anyOwner: candidates.some((c) => c.isVehicleOwner)
+        count: decorated.length,
+        anyOwner: decorated.some((c) => c.vinOwner || c.isVehicleOwner)
       });
     } catch (error) {
       CreateRRLogEvent(socket, "ERROR", `Error during RR export (prepare)`, {
@@ -376,7 +378,7 @@ function registerRREvents({ socket, redisHelpers }) {
         const vehQ = makeVehicleSearchPayloadFromJob(job);
         if (vehQ && vehQ.kind === "vin" && job?.v_vin) {
           const resVin = await rrCombinedSearch(bodyshop, vehQ);
-          const blocksVin = Array.isArray(resVin?.data) ? resVin.data : [];
+          const blocksVin = Array.isArray(resVin?.data) ? resVin.data : Array.isArray(resVin) ? resVin : [];
           try {
             await redisHelpers.setSessionTransactionData(
               socket.id,