This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
The following error is displayed after clicking on the "Synchronize Groups" button
in the K2 for SharePoint app: "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index"
Manually executing the "Refresh SharePoint Group Identity"
of the "SharePoint_Integration_Workflow_Helper_Methods" SmartObject results in the same error.
To resolve this please log a support ticket and request a tool that will be used to refresh the SharePoint Integration SmartObject. This will refresh "SharePoint_Integration_Workflow_Helper_Methods." After this you should be able to use the "Synchronize Groups" feature with no issues.
The tool must only be used under the guidance of the support engineer.