Were did you find these errors. I can't seem to get any data on sync.
It should be in the Marketo Error Log in CRM. It should be under settings, wherever that is in you particular edition.
Thanx Kenny, I found those. Any idea if there is any error messaging in Marketo regarding errors? it seems sync happens very rocky (sometimes a newly create contact syncs, sometimes it doesn't).
Danny Burlage
Certain classes of errors will appear in your Marketo notifications, but I don't really know if there's a list of which will appear where.