Source System Management (SSM) allows mappings between an organization, person, or contact and its source systems. Use SSM mappings to track which legacy, third party, or other systems the record originated from. See: Source Systems Overview.
In Customers Online, you can view active and inactive source system mappings. The source ID is the ID of the record in the source system. In the source system history are the inactive, or removed, source system mappings, which have passed end dates.
If your administrator has provided you privileges through the HZ: Source System Mapping Access profile option, you can also:
Create: Create a new mapping between the organization, person, or contact and a source system. You can only map to active source systems.
View History: View the history of the source system.