这减少了编写和维护模式的工作量，还确保了不会有某个复杂类型被偶然遗漏而不能扩展。

This reduces the effort to write and maintain the schema, as well as ensures that no complex type is accidentally left inextensible.

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如果没有，它很可能被置于维护模式。

If not, it will probably be placed into maintenance mode.

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解决方案是引导到维护模式，然后纠正配置问题。

The solution here is to boot into maintenance mode to correct the configuration problems.

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