RelatedDataInput

Field	Type	Required	Description
objectType	String	Yes	API name of the related Salesforce object.
duplicateCheck	Boolean	No	Enables duplicate detection for the related object.
duplicateScore	Integer	No	Minimum duplicate match score for the related object.
recordType	String	No	Record Type developer name or ID for the related record.
referenceField	String	Yes	Field on the related object that refers to the parent record's ID.
objectData	Map<String, String>	Yes	Key-value pairs representing fields and values for the related record.
relatedList	List<RelatedDataInput>	No	Optional nested related records.