Cannot sync previously deleted Marketo person to sfdc
Hello Marketo Community
I have a question about Salesforce sync of previously deleted Marketo leads. We are running a data cleanup management program in Marketo where we periodically delete leads from Marketo but we do retain them in Salesforce. We use the sync filter to prevent Salesforce synching them back to Marketo. The issue we have is that if any of those deleted leads comes back ie. by filling out a form we want them to sync back to an existing record in Salesforce but when Marketo tries to sync the lead to Salesforce we get a sync error saying {FIELD_CUSTOM_VALIDATION_EXCEPTION: Cannot create the Lead or Contact as a Lead or Contact with email ... already exists}
Has anyone had similar issue to overcome? I'd greatly appreciate any suggestions on how to fix the problem.
Thank you
Mirek