idempotency_key_missing (HTTP 400)

• HTTP status: 400
• Problem type URI: https://nowgetitdone.com/docs/api/problems/idempotency-key-missing

What it meansCopy Anchor Link

An Idempotency-Key was required for this call but none was supplied or it was malformed.

Likely causesCopy Anchor Link

• The header was omitted where the client library expected one.
• The header value was empty or longer than 255 characters.

How to fixCopy Anchor Link

• Send an Idempotency-Key header (1–255 visible ASCII characters; a UUID works well).
• Reuse the SAME key when retrying the SAME request to replay the first result.

Example problem+jsonCopy Anchor Link

{
    "type": "https://nowgetitdone.com/docs/api/problems/idempotency-key-missing",
    "title": "Idempotency-Key header required",
    "status": 400,
    "code": "idempotency_key_missing",
    "request_id": "req_a1b2c3d4"
}

RelatedCopy Anchor Link

• Idempotency