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# Transaction.AdditionalTransactionReason

Reasons that more than one transaction represents a single subscription period.

```
struct AdditionalTransactionReason
```

## Topics

### Identifying the reason

[`static let seatAddition: Transaction.AdditionalTransactionReason`](/documentation/StoreKit/Transaction/AdditionalTransactionReason-swift.struct/seatAddition)

A reason that indicates the group purchaser added seats to a multiseat subscription partway through the period.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

---

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