Duplicate Lead Created in Marketo

A document by KCS Integration on behalf of Cedric Roxas on Feb 19, 2018Last modified by Vishal Sharma on Jun 26, 2018
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Issue Description
A lead has the same email address as another lead, but it was not deduplicated, or Marketo did not update the existing lead with the same email address.


Issue Resolution
The lead was not created via one of the areas below (e.g. the lead was created via Salesforce.)  By design, Marketo ONLY deduplicates leads if they were created via one of the methods listed below.

  1. Web form fillout
  2. Munchkin API
  3. Web service API
  4. List import
  5. Web service API - Import to list

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