# VoucherifySdk::PromotionTierCampaignValidityTimeframe

## Properties

| Name | Type | Description | Notes |
| ---- | ---- | ----------- | ----- |
| **interval** | **String** | Defines the intervening time between two time points in ISO 8601 format, expressed as a duration. For example, a campaign with an `interval` of `P2D` will be active every other day. | [optional] |
| **duration** | **String** | Defines the amount of time the campaign will be active in ISO 8601 format. For example, a campaign with a `duration` of `P1D` will be valid for a duration of one day. | [optional] |