Modifying Source and Subsource Code Values
Change source and subsource code values saved in Constituent360 in one of these ways:
Edit the values in the constituent (Contact) Profile page. For details on editing Profile pages, refer to Managing Your Constituents.
Overwrite (update) the values on the Profile page with a Custom Constituent Import Operation. For details on overwriting Profile information with a data import, refer to Create Custom Constituent Import.
Apply a client-side method of the Constituent Management API. For details, refer to the Constituent Management API documentation. (This is a highly technical approach.)