The Submap refinement is not available when working with local elements or anonymous types.

submap细化不可用于处理局部元素或匿名类型。

youdao

Refactor to submap: If you already created a local map and later decide it is better as a reusable submap, right-click the existing local map and invoke the Refactor to submap action.

Refactor to submap：如果已经创建了一个local map，并且后来觉得它更适合作为可重用的submap，那么右键单击现有的local map并调用Refactor to submap操作。

youdao

Within a Submap or Local map, do many of the source and target fields have the same name and types?

在submap或local map中，是否有大量源和目标字段具有相同的名称和类型？

youdao