syncLead with Multiple Lead Emails

[Anonymous]

Hi Developers,

I have multiple Lead records where they use the same EMAIL, when I use syncLead API and pass EMAIL and some other values to change. Only one record gets updated on Marketo instace. Can you explain whether this is expected behavior? Also, how can I update the others Leads with same EMAIL ID.

Regards,
Eric. 

[Anonymous]

We are experiencing the same issue.  Have you resolved this?

Aileen