The tag file defines two attributes: the name of the required field and an optional error message.

这个标记文件定义两个属性：必需字段的名称和一个可选错误消息。

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During this information relay there's a margin for error; the wrong data could end up in the policy number field.

在这种信息中继过程中，可能出现错误；保单编号域中可能会出现错误的数据。

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If the agent encounters an error, it stores an error message in the Status text field of the parameter document.

如果代理遇到错误，它将在参数文档的Status文本字段中存储一条错误消息。

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"The field of financial reporting is prone to error, and it's costly, " explains Linden.

FORBES: The Evolution Of Web Search

According to the scientists, the margin of error of commercial GPS used in cars is about 15m in an open field, where the receiver has good visibility from the satellites.

BBC: Spanish scientists develop more accurate sat-nav system