We had a custom solution and it has been deleted but now we cant delete SITE COLUMNS.
error is “Field type is not installed properly. Go to the list settings page to delete this field”
and also "Site columns which are included
in content types cannot be deleted. Remove all references to this site column prior to deleting it."
How to delete site columns now?
omkar acharya
ULS logs show :
Application error when access /_layouts/15/fldedit.aspx, Error=Field type WikiPlus is not installed properly. Go to the list settings page to delete this field.
at Microsoft.SharePoint.SPFieldCollection.CreateSPFieldFromSafeArray(Int32 index)
at Microsoft.SharePoint.SPFieldCollection.CreateSPField(Int32 ifld)
at Microsoft.SharePoint.SPFieldCollection.EnsureSPField(Int32 index)
at Microsoft.SharePoint.ApplicationPages.ContentTypePageUtil.FetchFieldGroups(ICollection fields, Control listExistingGroup, String defaultGroup, String firstGroup)
at ASP._layouts_15_fldedit_aspx.__Render__control13(HtmlTextWriter __w, Control parameterContainer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at Microsoft.SharePoint.WebControls.AjaxDelta.RenderChildren(HtmlTextWriter output)
at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)
at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)
at Microsoft.SharePoint.WebControls.AjaxDelta.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
at Microsoft.SharePoint.WebControls.SharePointForm.Render(HtmlTextWriter output)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
at Microsoft.SharePoint.WebControls.UnsecuredLayoutsPageBase.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.Page.Render(HtmlTextWriter writer)
at Microsoft.SharePoint.WebControls.DeltaPage.RenderToBase(HtmlTextWriter writer)
at Microsoft.SharePoint.WebControls.DeltaPage.Render(HtmlTextWriter writer)
at Microsoft.SharePoint.WebControls.UnsecuredLayoutsPageBase.Render(HtmlTextWriter writer)
at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
SPRequest.GetGlobalContentTypeXml: UserPrincipalName=i:0).w|s-1-5-21-935981524-3360503449-101602611-4249826, AppPrincipalName= ,bstrUrl=/it/sites02 ,type=0 ,lcid=0
Failed to create field: Field type WikiPlus is not installed properly. Go to the list settings page to delete this field. .
Unable to locate the xml-definition for FieldName with FieldId '4c0fd400-33fe-40b1-af5a-c3b4b182e5c7', exception: Microsoft.SharePoint.SPException: Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) ---> System.Runtime.InteropServices.COMException:
Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))
at Microsoft.SharePoint.Library.SPRequestInternalClass.GetGlobalContentTypeXml(String bstrUrl, Int32 type, UInt32 lcid, Object varIdBytes)
at Microsoft.SharePoint.Library.SPRequest.GetGlobalContentTypeXml(String bstrUrl, Int32 type, UInt32 lcid, Object varIdBytes) -
-- End of inner exception stack trace ---
at Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx)
at Microsoft.SharePoint.Library.SPRequest.GetGlobalContentTypeXml(String bstrUrl, Int32 type, UInt32 lcid, Object varIdBytes)
at Microsoft.SharePoint.SPFieldCollection.FetchFieldsFromWeb()