I'd like to prevent someone's Salesforce record from being overwritten with bad information entered into a form.
For example, when an exisiting contact (who isn't cookied) fills a form on our website, their Job Title in Salesforce is overwritten with the data entered in the form. We had "CMO" and then the user entered "asldfkajsdf".
I'd like marketo forms to be smarter and say "If the Job Title in Salesforce is blank, insert data entered by user into the form. If Job Title in Salesforce is populated, do not overwrite." Is this possible?