通常，作为错误处理过程的一部分，应用程序会针对一组已知的模式对XML文档进行验证。

Typically, an application validates XML documents against a list of known schemas as part of its error handling.

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首先，整个过程背后的逻辑是合理的：如果您将这项数据元素从可选改为必需，那么您基本上就是复制了系统中其他地方所使用的错误处理过程。

At first, the logic behind this sounds reasonable: If you change this data element from optional to required, you essentially duplicate error processing that occurs elsewhere in the system.

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开发中的另一个重要方面是错误处理过程，WebSphere Message Broker V6.1中的调试支持功能得到了明显改变。

Another key aspect of development is the bugging process and there have been significant changes to the debugging support in WebSphere Message Broker V6.1.

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