---
title: webOrderLineItemId
framework: appstoreservernotifications
role: symbol
role_heading: Type
path: appstoreservernotifications/weborderlineitemid
---

# webOrderLineItemId

The unique identifier of subscription purchase events across devices, including subscription renewals.

## Declaration

```data
string webOrderLineItemId
```

## Discussion

Discussion This value applies only to auto-renewable subscriptions.

## See Also

### Transaction identifiers

- [originalTransactionId](appstoreservernotifications/originaltransactionid.md)
- [transactionId](appstoreservernotifications/transactionid.md)
- [previousOriginalTransactionId](appstoreservernotifications/previousoriginaltransactionid.md)