这些数据元素的定义或上下文可能差异很大，它们的含义只在自己的数据存储中有意义，很可能只有被相关的程序检索时才有意义。
The definitions or contexts of these data elements may be quite different and have meaning only within their particular data store, possibly only when retrieved by their associated program.
它包含检索正确的出错消息并以一种有意义的方式将其显示给用户的逻辑。
It contains the logic to retrieve the correct error message and display it back to the user in a meaningful way.
这允许进行更有意义的业务数据检索，并支持附加的场景。
This allows for the retrieval of more meaningful business data and for the support of additional scenarios.
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