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    Recurring Billing User Guide
    This section describes how to use this guide and where to find further information.
- Audience and Purpose
 - This guide is written for merchants who use the upgraded or new Recurring Billing service that is available through the Business Center and the REST API.
 - Conventions
 - This statement appear in this document:IMPORTANTAnImportantstatement contains information essential to successfully completing a task or learning a concept.