INVOICE_EMAIL_SEND_FAILED
503upstreamThe invoice email could not be sent.
Cause
The upstream mail provider refused or failed the send.
How to fix it
Retry with backoff. If it persists, contact support with the request_id.
Example response
503 INVOICE_EMAIL_SEND_FAILED
JSON
{
"error_code": "INVOICE_EMAIL_SEND_FAILED",
"error_type": "upstream",
"error_message": "The invoice email could not be sent.",
"hint": "Retry with backoff. If it persists, contact support with the request_id.",
"docs_url": "https://docs.billerapi.com/errors/INVOICE_EMAIL_SEND_FAILED",
"request_id": "d94f5e2a-8c3b-4f1e-9a7d-6b2c1e0f8a34"
}Related
- Error handling — the error envelope shape and how to parse it
- Error code reference — every stable error code
Canonical docs URL: https://docs.billerapi.com/errors/INVOICE_EMAIL_SEND_FAILED
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