Deactivates one or more subscription items in a subscription.
Important: We do not recommend using this endpoint to cancel the only item of a single-item subscription or the last active item of a multi-item subscription. Use the Update Subscription Renewal Type endpoint to turn off the automatic renewal for the entire subscription instead. For XML examples and schemas, see the Additional Examples - Deactivate Subscription Items. For more information about managing subscriptions, see Subscription Management 1.0 and 2.0.