UpsertDataInput

Field	Type	Required	Description
allOrNone	Boolean	No	If `true`, all operations must succeed or all will be rolled back.
duplicateCheck	Boolean	No	Enables duplicate detection before upsert.
duplicateScore	Integer	No	Minimum score to qualify a record as a duplicate.
objectType	String	Yes	API name of the main Salesforce object to insert or update (e.g., Lead).
recordType	String	No	Record Type developer name or ID to apply.
objectData	Map<String, String>	Yes	Key-value pairs representing fields and values for the main record.
relatedList	List<RelatedDataInput>	No	List of related records to process along with the main record.