Which Salesforce custom fields will sync with Marketing Cloud Account Engagement?

 Marketing Cloud Account Engagement can sync with Salesforce custom fields that are on the Lead, Contact, or Account objects. Custom Prospect fields in Marketing Cloud Account Engagement can be mapped to custom Lead or Contact fields in Salesforce. Custom Account fields in Marketing Cloud Account Engagement can be mapped to custom Account fields in Salesforce. Custom Opportunity fields in Marketing Cloud Account Engagement can be mapped to custom Opportunity fields in Salesforce. Custom Record Type fields are not supported by Marketing Cloud Account Engagement and cannot be synced