Optional user identifier from your system. If set, Manifest will enforce uniqueness, e.g. attempts to create a second buyer for the same user will fail.This should be a stable value like a User ID, not something that might change like an email address or phone number. This value should not contain any sensitive information.
Optional user identifier from your system. If set, Manifest will enforce uniqueness, e.g. attempts to create a second buyer for the same user will fail.This should be a stable value like a User ID, not something that might change like an email address or phone number. This value should not contain any sensitive information.
Embeddable form that allows your buyers to securely manage their payment method. You should not store this URL, as it may change over time. See Payment Methods for details.