When querying the Sent_Email_vod__c object, it is noticed that the Territory_vod__c field is null on one or more Sent Email records.
Territory_vod__c is not populated on Sent_Email_vod__c records if there is no Territory match between the sending User and the Account the email was sent to.
- This field references the sending User's Territory. If the User sending the email belongs to multiple Territories, this field references the first common territory between the User and the recipient Account.
- If there are no matches between the User's Territories and the Account's Territories, the Territory_vod__c field is not populated on the Sent Email record.
CRM Online Help: Tracking Approved Email Activity