如果不希望在部署时验证服务器设置，也可以在此方案中使用非复合引用。

You could also use a non-composite reference in this scenario if you do not want to verify server settings when you deploy.

youdao

为了避免这个问题的出现，您可以定义复合类型来封装数值类型，并将这个复合类型置为空来表示空引用。

To avoid this problem, you can define a complex type to wrap the value type and set the complex type to be null to indicate a null reference.

youdao

注意，在处理提升的引用时，SCA将引用视为跨复合体惟一的。

Notice that SCA treats references as unique across the composite when handling promoted references.

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