Fields That Cannot Be Updated
You cannot update system fields. All Siebel system fields are fields reserved only for use by Oracle for internal Siebel processes. They are not to be populated with customer data.
The following are reserved system fields that cannot be updated:
CONFLICT_ID
CREATED
CREATED_BY
LAST_UPD
LAST_UPD_BY
MODIFICATION_NUM
ROW_ID
DB_LAST_UPD
DB_LAST_UPD_SRC