Marketo Sync Changing Lead Information
To my knowledge "Marketo Sync" in Salesforce is updating lead information based off a leads most recent form fill on a Marketo form.
While I can see that updating the user information based on what the user provides is good - I frequently run into situations where a sales rep has reached out to a lead who has a bogus phone number, and then updates the leads information with a correct phone number. Then later, the lead will fill out a form and use a bogus phone number again and Marketo sync will change the correct phone number to the new bogus one that the lead most recently provided.
Is this type of situation avoidable?