Get Billing Agreement

Creates a new Billing Agreement based on an existing Subscription and a Billing Plan . A billing agreement represents a scheduled payment relationship between the merchant and the cardholder, managed automatically by ePay. It links a subscription and a plan together, allowing ePay to handle recurring charges according to the plan’s configuration - for example, charging the customer monthly based on the defined price and interval. Important: Billing agreements is an optional extension of the base subscription and is only necessary if you want ePay to automatically manage recurring or interval-based billing on your behalf. If you only need to perform unscheduled MIT (Merchant-Initiated Transaction) payments - meaning you trigger the charge manually via the API whenever needed - you do not need to create a billing agreement or billing plan. In that case, use the existing Subscription created through the Initialize Payment Session /cit endpoint, and perform MIT transactions directly. Relationship to other components - Subscription: The underlying link between a merchant and a stored payment method. Created via the Initialize Payment Session /cit endpoint by sending the Subscription object. - Billing Plan: Defines recurring details like price, interval, and retry policy. Used only when ePay manages the billing schedule automatically. - Billing Agreement: Connects a Subscription to a Billing Plan. Tracks scheduled processing and charge lifecycle. - Billing Agreement Charge: Represents a scheduled billing event created from an agreement. Each charge can have multiple transaction attempts and a completion deadline. - Transaction: The base payment model used for all processing. Charges and transactions are linked to maintain attempt history.