This instance couldn't reach its API specification on the last attempt, so this page shows the copy fetched before that. Anything added or changed since then is missing here, and the reference updates itself as soon as the specification is readable again. Last fetched 2026-11-12 05:58 UTC.
A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.
What a send did beyond moving the invoice's status: whether the invoice email went out and whether
the invoice got a payment link. Returned on the send response only, so the caller can warn the
operator at the moment the platform knows the recipient was not emailed or has nothing to pay with.
Values
Values:Values combine: send one or more member names separated by a comma and a space, or the integer sum of their values. Responses carry the names.
Why the invoice was sent with no payment link, or null when it has one.nullable
Values:Values combine: send one or more member names separated by a comma and a space, or the integer sum of their values. Responses carry the names.
NothingPayable
The invoice has nothing left to pay.
BillerNotMerchant
The invoice is not billed by a merchant, so hosted-page ownership cannot be confirmed.
NoDefaultHostedPage
The invoice names no hosted page and the merchant has no active payment page to default to.
AmbiguousDefaultHostedPage
The invoice names no hosted page and the merchant has more than one active payment page.
NoPermittedPaymentMethod
Every payment method the invoice allows is turned off for the merchant.
HostedPageNotFound
The hosted page the invoice targets was not found for the invoice's merchant. Covers a deleted page and a page that belongs to another merchant alike, by design.
HostedPageInactive
The hosted page the invoice targets is inactive.
SessionRejected
The hosted page refused the payment session for another reason; the metadata carries the stable error code.
This model has no documented fields.
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