I recently set up the integration with Marketo and LinkedIn Lead Gen ads but we were not consistently getting the leads to appear in Marketo despite them clearly being in LinkedIn as submitted forms. I spent 3 weeks in various support limbos all to find out a LinkedIn field was getting mapped to a Marketo field that was tied to a Salesforce field with a character limit. So instead of throwing an error somewhere I could see, it just wouldn't sync the leads. It took me 20 seconds to fix the problem, but it would be great if there was some sort of error log we could access this information in. It would save you hours of support tickets.
I regularly check the Notifications log and API error codes to see if there are high numbers, but if there was another place for developers and admins to go to debug issues without waiting for support ticket escalation that would be a huge help to both Marketo support and customers.
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