The API supports idempotency for safely retrying requests without accidentally performing the same operation twice. When creating or updating an object, use an idempotency key. Then, if a connection error occurs, you can safely repeat the request without risk of creating a second object or performing the update twice.
To perform an idempotent request, provide the following header:
Idempotency-Key: {KEY}
An idempotency key is a unique value generated by the client which the server uses to recognize subsequent retries of the same request. How you create unique keys is up to you, but we suggest using V4 UUIDs, or another random string with enough entropy to avoid collisions. Idempotency keys can be up to 255 characters long.
Keys are eligible to be removed from the system automatically after they're at least 24 hours old. All POST requests accept idempotency keys. Sending idempotency keys in GET and DELETE requests has no effect and should be avoided, as these requests are idempotent by definition.