SSRS(Reporting Service)中有些特性的調整，在設計介面不容易找到或根本找不到， 這時就需要切換到程式碼（Code）介面進行調整。

今天在刪除一個Group時， 除錯報表出現如下錯誤：

[rsInvalidToggleItem] The tablix ‘table1’ has ‘TestStation’ as a toggle item.  Toggle items must be text boxes that share the same scope as the hidden item or are in a scope that contains the hidden item, and cannot be contained within the current report item unless current grouping scope has a Parent.
Build complete -- 1 errors, 0 warnings

右鍵相關rdl檔案， 選“View Code”， 在
              <TablixMembers>
                <TablixMember>
                  <Group Name="table1_Details_Group">
                    <DataElementName>Detail</DataElementName>
                  </Group>
                  <TablixMembers>
                    <TablixMember />
                  </TablixMembers>
                  <DataElementName>Detail_Collection</DataElementName>
                  <DataElementOutput>Output</DataElementOutput>
                  <KeepTogether>true</KeepTogether>
                </TablixMember>
              </TablixMembers>

下面找到如下欄位:

              <Visibility>
                <Hidden>true</Hidden>
                <ToggleItem>TestStation</ToggleItem>
              </Visibility>

刪除後， 問題解決。