Summary of the "messagerelationship_" fields in ListManager
This table tracks referral outmail objects to the message that first caused the referral action.
Primary key: none
| 
 Field Name  | 
 Description  | 
 Version Added  | 
| 
 ParentID_  | 
 (int, NOT NULL)  | 
 
  | 
| 
 ChildID_  | 
 (int, NOT NULL)  | 
 
  |