How to check Billing Agreement is active or cancel?
问题 I am using Reference Transaction API in PayPal and not sure whether Billing Agreement is active or not while billing. I would like to know in advance if Billing Agreement is cancelled. I am wondering to have callback call on Billing agreement cancel call. 回答1: to check the status of a Billing Agreement you can use the BAUpdate API (NVP: METHOD=BillAgreementUpdate). Normally this API is used to delete a Billing Agreement, but if you use it without the BillingAgreementStatus field, it returns