n8n Node Guide: Remove Duplicates

Description

Data Transformation node in n8n.

What It Does

Drop duplicate items based on compared fields.

When To Use It

Deduplicating webhook floods, cleaning exports, idempotent processing.

Key Parameters

Compare fields (one or many), scope (all items vs per batch)

Common Mistakes

Compare on a stable unique key (id, email) – comparing everything can drop legit items.

Example

Remove Duplicates on email before a CRM upsert to avoid double-writes.

FAQ

Is this node included in n8n Community Edition?

Yes – Remove Duplicates ships with the free Community Edition. No paid license needed.

Pair with a database unique constraint for true idempotency.?

Where does it fit in a workflow?

Remove Duplicates works with any other node – connect it after a trigger or data node, and feed its output into the next step. Standard n8n data flow: trigger -> transform -> act.

Is support included?

Yes – message the seller through the store and I will help you wire this node.