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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 77%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
When i tried to add a new item giving below error.
and captured the ULS logs with the help of above correlation id:
System.Exception: Unable to extract Instance ID for the current batch.
at Stoneshare.CascadingDropDown.CascadingDropDownListFieldControl.CreateChildControls()
at System.Web.UI.Control.EnsureChildControls()
at Microsoft.SharePoint.WebControls.BaseFieldControl.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.AddedControl(Control control, Int32 index)
at Microsoft.SharePoint.WebPartPages.WebPart.AddParsedSubObject(Object obj)
at Microsoft.SharePoint.WebPartPages.DataFormWebPart.CreateChildControls()
at System.Web.UI.Control.EnsureChildControls()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Please suggest
How did you deploy the CascadingDropDown in the list?
The corrupted web part prevents the page from loading.
As a workaround, you could add ?contents=1 after the page URL to close broken web part.
Reference:
https://www.enjoysharepoint.com/sorry-something-went-wrong-web-parts-maintenance-page/
Hi Wang,
Thank you for the response. We have created casecading drop down feature using 2 datasource list.
First example is building a 2 layer cascading drop down feature:
we builded 2 data source lists.
-->
And i added ?contents=1 after page , it seems it does not have problamatic web parts. Please refer attached screenshot
and you can see some of the columns related to cascading dropdown feature
Please address what needs to be done in this case. Thank you.
The issue occurs with the Cascading Drop down list web part.
How did you make the Cascading Drop Down List as a column type?
If possible, please provide details about it.
Hi Wang,
while creating a column we do have option to choose cascading drop down option. please refer below screenshot
but in my previous thread in the webparts list from page, it is not showing web part related to cascading?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(105.60000000000001, 91%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECA%3C/text%3E%3C/svg%3E)
It shouldn't be a big, try adding a new item again, but this time, ensure your internet connection is fine, then try again, if it persists, we might need to do some troubleshooting to where the error is coming from.
Thank you this one worked when it occurred again