api-docs/docs/node-tracker/markdown/node-tracker.ecommercetransactionevent.affiliation.md
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[Home](./index.md) > [@snowplow/node-tracker](./node-tracker.md) > [EcommerceTransactionEvent](./node-tracker.ecommercetransactionevent.md) > [affiliation](./node-tracker.ecommercetransactionevent.affiliation.md)
## EcommerceTransactionEvent.affiliation property
Transaction affiliation (e.g. store where sale took place)
<b>Signature:</b>
```typescript
affiliation?: string;
```