# 变更管理
[更新变更单 - UpdateChange](https://support.huaweicloud.com/api-coc/UpdateChange.html)
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[新建工单 - CreateTicket](https://support.huaweicloud.com/api-coc/CreateTicket.html)
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[上传附件 - CreateAttachment](https://support.huaweicloud.com/api-coc/CreateAttachment.html)
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[下载附件 - DownloadAttachment](https://support.huaweicloud.com/api-coc/DownloadAttachment.html)
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[工单状态修改 - UpdateTicket](https://support.huaweicloud.com/api-coc/UpdateTicket.html)
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[删除变更单 - DeleteTicketInfo](https://support.huaweicloud.com/api-coc/DeleteTicketInfo.html)
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[搜索资源变更工单子单 - ListSubTickets](https://support.huaweicloud.com/api-coc/ListSubTickets.html)
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