I am getting the below crawl error when search tries to crawl 2 site collections:

The SharePoint item being crawled returned an error when requesting data from the web service. ( Error from SharePoint site: *** An item with the same key has already been added., CorrelationID: 9fe8c99d-16a9-a04f-6dfc-8d129b83c3fa; SearchID = A9836C8D-CBD7-434E-BC11-149D24EDE52A )

What does this error mean and how this can be resolved?

  • Check the log entry using the correlation id for more info.
    – Bunzab
    Commented Jan 12, 2017 at 12:33
  • As Buzab suggests check the ULS logs for more information. If standard logs are not providing enough info. Increase the verbosity of the logs to verboseex by running this SP PS command: "Set-SPLogLevel -EventSeverity verbose -TraceSeverity verboseex" to set it back to standard after troubleshooting run the "Clear-SPLogLevel" Commented Jan 12, 2017 at 13:09

1 Answer 1


This issue was caused by a duplicate Group name in the site.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.