Schema deletion failed: class is used as sub class.
架构更新失败：类别作为子类别使用。
Schema deletion failed: attribute is used in may-contain.
架构更新失败：属性在可能包含中使用。
Schema deletion failed: attribute is used In must-contaIn.
架构更新失败：属性在必须包含中使用。
Schema deletion failed: attribute is used In must-contaIn.
架构更新失败：属性在必须包含中使用。
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