The lead's activity log shows that the 'Sync Person to SFDC' flow step failed because of the following message:
"Failed: INVALID_CROSS_REFERENCE_KEY: Record Type ID: this ID value isn't valid for the user:"
The issue is the SFDC ID value populated in the "Record Type ID" field is not considered a valid value in Salesforce for the Lead/Contact. You'll want to work with your SFDC Admin to identify a valid value or try deleting the value in Marketo and then updating this value from the Salesforce side.
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