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n8n · Concept

Item linking

Item linking connects each output item to the input item that produced it. Programmatic n8n nodes must preserve or set these links when automatic matching is not possible.

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Syntax

{ json: { ... }, pairedItem: { item: number, input?: number } }

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  • Item linking concepts
  • Item linking for node creators
  • Preserving linking in the Code node
  • Item linking errors
  • Mapping in the UI

Source: Item linking for node creators. Checked 2026-11-03.