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It is recommended that recordIdentifier be present. If present, it identifies the record to be deleted. If it is not present, then Record must be present.
RecordVersions may be present. If present, they further identify the record to be deleted.
Record may be present if and only if recordIdentifier is not present.
RecordIdentifier may be present. If present, it identifies the deleted record.
RecordVersions may be present. If present, they further identify the deleted record.
Record may be present. If present, it is the record which was deleted.