使用1.7.0版本的云函数操作事务, 在配置

时, 会报如下错误:

指定了对应的 envname 后恢复正常, 但在同时更新多条记录时, 经常会报如下错误:

"Error: errCode: -501001 resource system error | errMsg: document.update:fail [ResourceUnavailable.TransactionBusy] Transaction is busy. Please check your request, but if the problem persists, contact us.; at document.update api; 

    at returnAsCloudSDKError (/cloudfunctions/recommend/node_modules/wx-server-sdk/index.js:6057:16)

    at Object.returnAsFinalCloudSDKError (/cloudfunctions/recommend/node_modules/wx-server-sdk/index.js:6071:15)

    at /cloudfunctions/recommend/node_modules/wx-server-sdk/index.js:1326:32

    at processTicksAndRejections (internal/process/task_queues.js:85:5)"

能帮忙查一下原因吗?