A couple of years back we made updates to Salesforce sync errors. This allows user to get notified on “Salesforce sync errors” and “Salesforce integration paused” which means Get notified when your Salesforce integration stops working because there’s an outage or you reached your API call limit.
You can enable these notifications by going to the gear icon in the top right > Your Preferences > Notifications > System notifications.
Here is a knowledge-based article for more information, Manage Salesforce integration API calls and sync errors