APIs

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CCBill API Guide	CCBill API: Cancel Subscription
CCBill API: Direct Discount API	CCBill API: Charge by Previous Transaction ID
CCBill API: Advanced Dynamic Upgrades	Webhooks User Guide
Data Link Extract System User Guide	Managing Multiple Products
CCBill Velocity Controls	Subscription Upgrade System Guide
Subscription Upgrade System Addendum A: Dynamic Upgrades	Subscription Upgrade System Addendum B: One-Click Upgrades

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