求助下一段文字怎么解释?谢谢!
specifies that SAS is attempting to execute an OUTPUT or REPLACE statement on an observation that contains a key value which [url=]duplicates[/url] one already existing on an indexed data set that requires unique key values.

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楼主: 来梦来人
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[原创博文] 求助解释一段英文 |
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