---
title: "Drop duplication"
slug: "common-vapidatatype-dataflowetljobnode-transformdropduplication"
updated: 2026-09-17T09:25:15Z
published: 2026-09-17T09:25:15Z
canonical: "api.ncloud-docs.com/common-vapidatatype-dataflowetljobnode-transformdropduplication"
---

> ## Documentation Index
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# Drop duplication

This is the conversion (transform) operation information for the drop duplication type.

              Note

              

For common syntax and field information on the node source, transform, and target types of Data Flow ETL jobs, see [ETLJobNode common](/docs/en/common-vapidatatype-dataflowetljobnode).

### Syntax

The syntax is as follows:

```
private List<String> dropFieldList;
```

### Field

The following describes the fields:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `dropFieldList` | List | Required | Field name to check for duplicates |