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Marketo is now standardizing language across all subscriptions, so you may see lead/leads in your subscription and person/people in These terms mean the same thing; it does not affect article instructions. There are some other changes, too. Learn more.

Sometimes it's best to just list the rules.  Here we go:

  • When you merge two leads in Salesforce, the normal sync tells Marketo and the leads are merged automatically as people in Marketo.
  • Merging two people in Marketo actually invokes the same process as merging them as leads in Salesforce. It still works automatically.
  • Merging a lead (person) into a contact works the same way.  You end up with a single contact on both sides.
  • When merging, the default score is summed.


Merging 3 leads (people) with scores of 10 each, will yield a result of 1 lead (person) with a score of 30.

  • Conflicting field values are taken from the "winning record." (Record = the resulting lead or contact)
  • If the "losing record" (the one that is disappearing) had a value and the winning record has none, we will keep the losing record.  In other words, "Some value is better than no value."
  • All activity log items are merged.

Deep Dive

Deep dive for more information about merging people in Marketo.

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