問題描述
PutLiveChannel請求中包含冗餘的Snapshot節點。
問題原因
您發起了PutLiveChannel請求來建立一個LiveChannel，但是請求體XML中包含不止一個Snapshot節點。
該節點用於描述高頻截圖操作Snapshot各項參數，介面僅允許包含一個名為Snapshot的節點。
問題樣本
比如您發起了如下請求：
PUT /test-channel?live HTTP/1.1
Date: Wed, 24 Aug 2016 11:11:28 GMT
Content-Length: xxx
Host: test-bucket.oss-cn-hangzhou.aliyuncs.com
Authorization: OSS qn6q**************:77Dv****************
<?xml version="1.0" encoding="utf-8"?>
<LiveChannelConfiguration>
<Description />
<Status>enabled</Status>
<Target>
<Type>HLS</Type>
<FragDuration>2</FragDuration>
<FragCount>3</FragCount>
</Target>
<Snapshot>
<RoleName>role_for_snapshot</RoleName>
<DestBucket>snapshotdest</DestBucket>
<NotifyTopic>snapshotnotify</NotifyTopic>
<Interval>1</Interval>
</Snapshot>
<Snapshot>
<RoleName>role2_for_snapshot</RoleName>
<DestBucket>snapshotdest2</DestBucket>
<NotifyTopic>snapshotnotify</NotifyTopic>
<Interval>1</Interval>
</Snapshot>
</LiveChannelConfiguration上述請求中有兩個Snapshot節點，不滿足介面的要求，所以介面返回該錯誤。
解決方案
請確保請求體XML中僅存在一個Snapshot節點，比如：
PUT /test-channel?live HTTP/1.1
Date: Wed, 24 Aug 2016 11:11:28 GMT
Content-Length: xxx
Host: test-bucket.oss-cn-hangzhou.aliyuncs.com
Authorization: OSS qn6q**************:77Dv****************
<?xml version="1.0" encoding="utf-8"?>
<LiveChannelConfiguration>
<Description />
<Status>enabled</Status>
<Target>
<Type>HLS</Type>
<FragDuration>2</FragDuration>
<FragCount>3</FragCount>
</Target>
<Snapshot>
<RoleName>role_for_snapshot</RoleName>
<DestBucket>snapshotdest</DestBucket>
<NotifyTopic>snapshotnotify</NotifyTopic>
<Interval>1</Interval>
</Snapshot>
</LiveChannelConfiguration