# Remove Duplicates - Workflow node | Docs - nodulz

Source: https://nodulz.com/docs/nodes/remove_duplicates

Language: en

Delete items with matching field values

## Usage and specifics

compareFields sets comparison fields. excludePreviousRuns extends checks to previous runs: this differs from deduplicating only the current batch.

Technical type : `remove_duplicates`. Runtime : `nodulz`.

## Credentials and prerequisites

This node defines no dedicated external credential. Remote sources or execution targets may still need their own access credentials.

See the [credentials guide](/docs/credentials) if a remote source or execution target requires access.

## Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

| Parameter | Type | Default | Values / limits |
| --- | --- | --- | --- |
| `source` | `string` | `""` | - |
| `compareFields` | `array` | `[]` | - |
| `excludePreviousRuns` | `boolean` | `false` | - |

## Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

```json
{
  "source": "",
  "compareFields": [],
  "excludePreviousRuns": false
}
```

## Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.

See also : [Expressions and data](/docs/expressions), [Executions](/docs/executions), [Node catalog](/docs/nodes).

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- [Features - nodulz](https://nodulz.com/product/overview)
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