diff --git a/scripts/admin-test-env-modules/README.md b/scripts/admin-test-env-modules/README.md
index 9d32effcc..1a281b68f 100644
--- a/scripts/admin-test-env-modules/README.md
+++ b/scripts/admin-test-env-modules/README.md
@@ -22,7 +22,7 @@
 
 `phase4-overseas-return-followups.mjs` 是独立可选后续模块，只在显式 `--modules phase4-overseas-return-followups` 时依赖并运行退货前置，再关联换标单及执行退货出库；不计入退货专项通过结论。仅复用同次运行、同 marker 的退货资源，凭据只在内存中，finally 停用其独立临时 PDA。合同检查复用 `phase4-overseas-return-receipt-contract.test.mjs`；HTTP 必须有目标环境写入授权。
 
-退货转换标请求按当前契约传 `items[{skuCode, quantity}]`、`fileScope` 和真实 FBA 目的仓 ID/编码，返回 `PENDING_REVIEW` 与 `skuCodes`。分页查找启用的 SCK8，缺失则阻断；总箱标文件回查 `cartonTotalFileId`。独立退货出库候选使用查询参数 `warehouseId`。同模块的 `completeReturnRelabel` 在独立出库之后继续审核本轮换标申请、PDA 认领与数量完成、来源托盘解析、正式生成目标托盘、组托及原键重放、上传合成完工图片、提交完工、客户确认及原键重放，最终回查原退货单仍为签收完成且换标关联一致。它不执行其他客户库存操作；目标托盘是本轮换标业务资源，不是国内基础托盘。退货 SKU 换标客户确认后为 `COMPLETED`，还需另验该换标库存的后续出库；不能把此前未冻结库存独立出库视为换标后出库。
+退货转换标请求按当前契约传 `items[{skuCode, quantity}]`、`fileScope` 和真实 FBA 目的仓 ID/编码，返回 `PENDING_REVIEW` 与 `skuCodes`。分页查找启用的 SCK8，缺失则阻断；总箱标文件回查 `cartonTotalFileId`。独立退货出库候选使用查询参数 `warehouseId`。同模块的 `completeReturnRelabel` 在独立出库之后继续审核本轮换标申请、PDA 认领与数量完成、来源托盘解析、正式生成目标托盘、组托及原键重放、上传合成完工图片、提交完工、客户确认及原键重放，最终回查原退货单仍为签收完成且换标关联一致。它不执行其他客户库存操作；目标托盘是本轮换标业务资源，不是国内基础托盘。客户确认后 `outboundRelabelledReturn` 逐箱核对本轮换标号、客户、仓库、来源单与数量，只为已完成换标的一件库存创建出库，检查创建原键重放、PDA 拣货/完成与平台、客户库存 `OUTBOUNDED` 终态；另存 `relabelOutboundNo`，不能用此前未冻结库存的独立出库结果替代。
 
 退货专项复跑命令（在后端根目录执行，每次使用新的报告名；不要与其他环境混用）：
 
diff --git a/scripts/admin-test-env-modules/phase4-overseas-return-followups.mjs b/scripts/admin-test-env-modules/phase4-overseas-return-followups.mjs
index 2d95f89e4..36eecc1db 100644
--- a/scripts/admin-test-env-modules/phase4-overseas-return-followups.mjs
+++ b/scripts/admin-test-env-modules/phase4-overseas-return-followups.mjs
@@ -198,12 +198,71 @@ export async function run(context) {
         context.createdResources.phase4OverseasReturnReceipt.returnOutboundNo = outboundNo
       }
     }
-    if (source.relabelNo) await completeReturnRelabel(context, merchantToken, picker.token, source.relabelNo, returnNo)
+    if (source.relabelNo) {
+      await completeReturnRelabel(context, merchantToken, picker.token, source.relabelNo, returnNo)
+      await outboundRelabelledReturn(context, merchantToken, picker.token, source.relabelNo, returnNo, warehouse.id)
+    }
   } finally {
     await disablePicker(context, picker, 92)
   }
 }
 
+export async function outboundRelabelledReturn(context, merchantToken, pdaToken, relabelNo, returnNo, warehouseId) {
+  const customerId = id(context.context.merchantQualificationFixture.tenantId)
+  const root = '/api/platform/v1/last-leg/outbound-orders'
+  const inventory = '/api/merchant/v1/last-leg/return-inventory/cartons'
+  const command = async (token, method, name, path, body) => {
+    const result = await overseas(context, token, method, name, path, body)
+    if (!success(result.response)) throw new Error(`${name}: ${trace(result.response)}`)
+    return result.data
+  }
+  const require = (name, value) => {
+    context.assert(MODULE, name, null, Boolean(value), `relabelNo=${relabelNo}`, OPTIONS)
+    if (!value) throw new Error(name)
+  }
+  const candidates = await command(context.overseasToken, 'GET', '查询换标完成后的退货出库候选',
+    query(`${root}/return/candidates`, { customerId, warehouseId }))
+  const selected = []
+  for (const row of (Array.isArray(candidates) ? candidates : []).filter(row => row.returnNo === returnNo)) {
+    const detail = await command(merchantToken, 'GET', '客户核对出库候选的真实换标归属', `${inventory}/${encodeURIComponent(row.cartonMark)}`)
+    if (detail.relabelNo !== relabelNo) continue
+    require('已换标候选归属数量与完成状态正确', detail.customerId === customerId
+      && detail.overseasWarehouseId === warehouseId && detail.sourceReturnNo === returnNo
+      && detail.status === 'AVAILABLE' && detail.relabelStatus === 'COMPLETED'
+      && Number(detail.totalQuantity) === 1 && detail.items?.length === 1)
+    selected.push(detail)
+  }
+  require('只出库本轮实际换标的一件库存', selected.length === 1)
+  const mark = selected[0].cartonMark
+  const body = { recipient: `${context.marker} RELABELLED RETURN`, overseasWarehouseId: warehouseId,
+    returnNo, cartonMarks: [mark], remark: context.marker, idempotencyKey: key(context, 'RELABELLED-OUTBOUND') }
+  const task = await command(context.overseasToken, 'POST', '创建本轮已换标库存出库', query(`${root}/return`, { customerId }), body)
+  const replay = await command(context.overseasToken, 'POST', '已换标库存出库创建原键重放', query(`${root}/return`, { customerId }), body)
+  require('出库重放保持同一任务和业务单', nonBlank(task.taskNo) && nonBlank(task.outboundNo)
+    && replay.taskNo === task.taskNo && replay.outboundNo === task.outboundNo)
+  const path = `/api/pda/v1/last-leg/outbound-tasks/${encodeURIComponent(task.taskNo)}`
+  const detail = await command(pdaToken, 'GET', 'PDA核对已换标库存出库任务', path)
+  const frozen = await command(context.overseasToken, 'GET', '平台核对本轮冻结出库箱号',
+    query(`${root}/${encodeURIComponent(task.outboundNo)}`, { customerId }))
+  const items = detail.items || []
+  require('出库任务只包含本轮已换标箱', detail.task?.outboundNo === task.outboundNo
+    && items.length === 1 && Number(items[0].packageCount) === 1
+    && frozen.outbound?.outboundNo === task.outboundNo && frozen.pallets?.length === 1
+    && frozen.pallets[0].cartonMarks === mark
+    && id(frozen.pallets[0].id) === id(items[0].outboundPalletItemId))
+  await command(pdaToken, 'POST', 'PDA拣取已换标库存', `${path}/pick`, {
+    outboundPalletItemId: items[0].outboundPalletItemId, inventoryPositionId: null, packages: 1,
+    cartonMarks: [mark], idempotencyKey: key(context, 'RELABELLED-PICK'),
+  })
+  const completed = await command(pdaToken, 'POST', 'PDA完成已换标库存出库', `${path}/complete`, { idempotencyKey: key(context, 'RELABELLED-COMPLETE') })
+  const outbound = await command(context.overseasToken, 'GET', '平台回查已换标出库终态', query(`${root}/${encodeURIComponent(task.outboundNo)}`, { customerId }))
+  const after = await command(merchantToken, 'GET', '客户回查已换标库存出库终态', `${inventory}/${encodeURIComponent(mark)}`)
+  require('已换标库存出库完成且来源和换标关联不漂移', completed.status === 'COMPLETED'
+    && outbound.outbound?.status === 'OUTBOUNDED' && after.status === 'OUTBOUNDED'
+    && after.relabelNo === relabelNo && after.sourceReturnNo === returnNo && Number(after.totalQuantity) === 1)
+  context.createdResources.phase4OverseasReturnReceipt.relabelOutboundNo = task.outboundNo
+}
+
 export async function completeReturnRelabel(context, merchantToken, pdaToken, relabelNo, returnNo) {
   const platform = `/api/platform/v1/last-leg/relabel-applications/${encodeURIComponent(relabelNo)}`
   const merchant = `/api/merchant/v1/last-leg/relabel-applications/${encodeURIComponent(relabelNo)}`
diff --git a/scripts/admin-test-env-modules/phase4-overseas-return-receipt-contract.test.mjs b/scripts/admin-test-env-modules/phase4-overseas-return-receipt-contract.test.mjs
index d32d4054b..e6a42f051 100644
--- a/scripts/admin-test-env-modules/phase4-overseas-return-receipt-contract.test.mjs
+++ b/scripts/admin-test-env-modules/phase4-overseas-return-receipt-contract.test.mjs
@@ -3,11 +3,47 @@ import assert from 'node:assert/strict'
 import { readFile } from 'node:fs/promises'
 import { validationFailure, inventorySnapshot } from './phase4-overseas-return-receipt.mjs'
 import { normalizeModuleOrder } from '../admin-test-env-acceptance.mjs'
-import { completeReturnRelabel } from './phase4-overseas-return-followups.mjs'
+import { completeReturnRelabel, outboundRelabelledReturn } from './phase4-overseas-return-followups.mjs'
 
 const moduleUrl = new URL('./phase4-overseas-return-receipt.mjs', import.meta.url)
 const acceptanceUrl = new URL('../admin-test-env-acceptance.mjs', import.meta.url)
 
+test('relabelled outbound refuses another relabel application before creating an outbound', async () => {
+  const calls = []
+  const context = { marker: 'fixture', overseasToken: 'admin', context: { merchantQualificationFixture: { tenantId: '123' } },
+    addStep() {}, assert() {},
+    async requestOverseas(method, path) {
+      calls.push({ method, path })
+      return { http: 200, body: { code: '200', data: path.includes('/candidates')
+        ? [{ returnNo: 'RT-1', cartonMark: 'BOX' }] : { relabelNo: 'RL-OTHER' } } }
+    } }
+  await assert.rejects(outboundRelabelledReturn(context, 'merchant', 'pda', 'RL-1', 'RT-1', '42'), /只出库本轮/)
+  assert.ok(calls.every(call => call.method === 'GET'))
+})
+
+test('return outbound binds platform frozen carton to PDA item without requiring ordinary inventory positions', async () => {
+  const context = { marker: 'fixture', overseasToken: 'admin', context: { merchantQualificationFixture: { tenantId: '123' } },
+    createdResources: { phase4OverseasReturnReceipt: {} }, addStep() {},
+    assert(_m, name, _r, passed) { assert.ok(passed, name) },
+    async requestOverseas(method, path, body) {
+      let data
+      if (path.includes('/candidates')) data = [{ returnNo: 'RT-1', cartonMark: 'BOX' }]
+      else if (path.includes('/return-inventory/cartons/')) data = { cartonMark: 'BOX', customerId: '123',
+        overseasWarehouseId: '42', sourceReturnNo: 'RT-1', relabelNo: 'RL-1', relabelStatus: 'COMPLETED',
+        status: this.done ? 'OUTBOUNDED' : 'AVAILABLE', totalQuantity: 1, items: [{ skuCode: 'SKU', quantity: 1 }] }
+      else if (path.includes('/outbound-orders/return?')) data = { taskNo: 'TASK', outboundNo: 'OUT' }
+      else if (path.endsWith('/complete')) { this.done = true; data = { status: 'COMPLETED' } }
+      else if (path.endsWith('/pick')) {
+        assert.deepEqual(body.cartonMarks, ['BOX']); assert.equal(body.outboundPalletItemId, '9')
+        data = { status: 'IN_PROGRESS' }
+      } else if (path.includes('/outbound-orders/OUT?')) data = { outbound: { outboundNo: 'OUT', status: this.done ? 'OUTBOUNDED' : 'WAIT_PICK' }, pallets: [{ id: '9', cartonMarks: 'BOX' }] }
+      else data = { task: { outboundNo: 'OUT' }, items: [{ outboundPalletItemId: '9', packageCount: 1, positions: [] }] }
+      return { http: 200, body: { code: '200', data } }
+    } }
+  await outboundRelabelledReturn(context, 'merchant', 'pda', 'RL-1', 'RT-1', '42')
+  assert.equal(context.createdResources.phase4OverseasReturnReceipt.relabelOutboundNo, 'OUT')
+})
+
 test('return relabel lifecycle requires review, quantities, binding, photo and customer confirmation', async () => {
   const calls = []
   const task = { relabelNo: 'RL-1', version: 1, items: [{ itemId: '1', cartonMark: 'BOX', operationType: 'RETURN_BULK_SKU_LABEL', expectedPackages: 1 }] }