diff --git a/scripts/admin-test-env-modules/finance-downloads.mjs b/scripts/admin-test-env-modules/finance-downloads.mjs
index 7af56c111..2f45e3a45 100644
--- a/scripts/admin-test-env-modules/finance-downloads.mjs
+++ b/scripts/admin-test-env-modules/finance-downloads.mjs
@@ -112,7 +112,9 @@ async function poll(context, taskId, expected = 'SUCCEEDED', attempts = 45) {
 
 async function createTask(context, type, parameters, suffix, expectedHeaders, expectedTokens = []) {
   const body = { exportType: type, format: 'XLSX', taskName: `${context.marker}-${suffix}`, parameters }
-  const createdResponse = await context.request('POST', '/api/platform/v1/files/export-tasks', body)
+  const idempotencyKey = `${context.marker}-export-${type}-${suffix}`.slice(0, 128)
+  const createdResponse = await context.request('POST', '/api/platform/v1/files/export-tasks', body,
+    context.token, { 'Idempotency-Key': idempotencyKey })
   const created = context.apiSuccess(MODULE, `${type} 创建导出任务`, createdResponse,
     `type=${type}`, OPTIONS)
   const taskId = id(created?.id)
@@ -122,7 +124,8 @@ async function createTask(context, type, parameters, suffix, expectedHeaders, ex
     `taskId=${taskId || 'missing'}, status=${created?.status ?? 'missing'}`, OPTIONS)
   if (!taskId) return null
 
-  const duplicateResponse = await context.request('POST', '/api/platform/v1/files/export-tasks', body)
+  const duplicateResponse = await context.request('POST', '/api/platform/v1/files/export-tasks', body,
+    context.token, { 'Idempotency-Key': idempotencyKey })
   const duplicate = context.apiSuccess(MODULE, `${type} 重复请求`, duplicateResponse, '', OPTIONS)
   context.assert(MODULE, `${type} 60 秒同参请求合并`, duplicateResponse, id(duplicate?.id) === taskId,
     `original=${taskId}, duplicate=${id(duplicate?.id) || 'missing'}`, OPTIONS)