XML 驗證: 元素 '%1' 可能沒有 xsi:nil="true"，因為它不是定義為 Nillable，或因為它有固定的值條件約束。位置: %2

XML Validation: Element '%1' may not have xsi:nil="true" because it was not defined as nillable or because it has a fixed value constraint. Location: %2