Understanding Activity Attributes
Activity attributes are additional reference to existing data. Activity attributes can vary in size and value according to the ‘ActivityType’, for a given Marketo user account.
For example, An Activity row (with activitytype: Click Link) can have two activity-attributes and on other hand the next activity row (with activitytype: Visit Webpage) can have seven activity-attributes.
Note: When you assign Activity Attributes file to the connection, you can observe the attributes are reflected in Source object file header name while performing a DSS task.