generated: '2026-07-20'
method: searched
source: https://outpostnow.com/docs/api/tax-of-record/
standards:
- id: oauth2-client-credentials
  conforms: true
  evidence: >-
    OAuth2 client_credentials grant at https://access.outpostanywhere.com/oauth2/token
    returning a Bearer JWT (RFC 6749 §4.4).
- id: jwt-bearer
  conforms: true
  evidence: Access tokens and Partner API tokens are JWT Bearer tokens (RFC 6750 / RFC 7519).
- id: oidc
  conforms: false
  evidence: OAuth2 token endpoint only; no OpenID Connect discovery or id_token documented.
- id: rfc9457-problem-details
  conforms: false
  evidence: Errors use a code-string envelope (invalid_argument), not application/problem+json.
- id: idempotency
  conforms: true
  evidence: >-
    Client-supplied reference keys (merchantTransactionReference; merchantReference +
    productCode) make write operations idempotent.
- id: iso-3166-1
  conforms: true
  evidence: Jurisdiction and country fields use ISO 3166-1 alpha-2 codes.
- id: iso-4217
  conforms: true
  evidence: Currency fields use ISO 4217 codes.
- id: iso-8601
  conforms: true
  evidence: Dates and timestamps use ISO 8601.
- id: webhooks
  conforms: true
  evidence: Merchant of Record API delivers proforma_invoice.settled webhooks with self-service subscription management.