# `IConfiguratorNode.nodeId`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`IConfiguratorNode`](IConfiguratorNode.md) · inherited by [`IGroupNode`](IGroupNode.md), [`IModelNode`](IModelNode.md), [`IMaterialNode`](IMaterialNode.md), [`ConfiguratorNode`](ConfiguratorNode.md) · stable · since 2.0.0

```ts
nodeId: string;
```

The placed-node id. Required and unique in the scene model; minted by your app
(crypto.randomUUID() or your own stable key). Load, undo, redo, rollback, applyPatch and a new
glbUrl keep it. A missing or repeated id rejects the write with HoloInputError
'missing-node-id' / 'duplicate-node-id' at the call. [`_id`](IConfiguratorNode._id.md) belongs to the backend; the runtime
ignores it.

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `nodeId` names no product |
| 2. A precedent | not recorded: no ledger row (coverage.json) names this member or its owner |
| 3. Two apps, or labs | not recorded: no ledger row names this member or its owner |
| 4. The cheaper fix first | not recorded per member (Appendix B decides it per need) |