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E15xxx — WhatsApp sending & delivery

Error codes in the E15xxx range that the public Bird API returns. Each code links to its own page (the page its doc_url points at) with the cause and what to do. Retired codes stay listed; they are never renamed or reused.
CodeNameStatusMessage
E15000WhatsAppBackendUnavailable503The WhatsApp service is temporarily unavailable. Please retry.
E15001WhatsAppInvalidRecipient422The recipient phone number is not a valid E.164 number. Use the international format with a leading plus, for example +14155550100.
E15002WhatsAppTemplateNotFound422No WhatsApp template matches the requested name and language.
E15003WhatsAppTemplateParameterMismatch422The message parameters do not match the parameters the template declares.
  • Errors: the full wire contract, status mapping, and all code ranges
  • Error handling: branching on type and code, validation details, and vendor_code