Bulk API: Support for Update Only or Create Only Contact & Account Imports
- Set Bulk API Contact and Account imports to Update Only or Create Only using the new importRule import definition property
- importRule accepts the following values:
- "createAndUpdate": Current upsert behavior
- "updateOnly": Records are only imported if there is a match on identifierFieldName
- "createOnly": Records are only imported if there is not a match on identifierFieldName and or, for contacts only, Email Address
- importRule will only be returned if included in the create or update definition request
- Current upsert behavior is the default if importRule is not included in definition creation or update

Sample
Steps to enable and configure
You don't need to do anything to enable this feature.