idempotency-key-missing - andteam

Status 400. An Idempotency-Key header is required. The response is application/problem+json, and its type is https://docs.andteam.com/api/problems/idempotency-key-missing:

{
  "type": "https://docs.andteam.com/api/problems/idempotency-key-missing",
  "title": "An Idempotency-Key header is required",
  "status": 400
}

What it means

Every POST needs an Idempotency-Key header, so a retry never makes a second record.

What to do

Send a unique Idempotency-Key (a UUID works) and reuse it only when you retry the same request. See Retries and versions. See Errors for every type.