We are trying to offer deferred purchases via our app. We would like to know where/how we may obtain the request parameter “mandateId” required to implement deferred billing, as per "https://shopify.dev/api/admin-graphql/2022-07/mutations/orderCreateMandatePayment". As can be seen, the definition of this parameter in this doc, “The mandate ID used for payment” is not very clear and doesn’t help us very much. A quick search on shopify.dev for “mandateId” also doesn’t throw up much.
Any help here will be greatly appreciated.