Marketo Connector Guide > Creating a Marketo Data Synchronization Task (DSS) > Enabling the Dedup in Marketo Connector
  

Enabling the Dedup in Marketo Connector

There is a DedupEnabled field in synchMultipleLeads, You can use this field in Marketo to use Dedupe fucntionality.
The dedup functionality for True/ False value is explained below: