idempotency-key-malformed

Status 400. The type of this problem is the address of this page.

What happened

The Idempotency-Key header was longer than http-api.idempotency.max_key_length characters, 255 by default, or held a character outside printable ASCII. A key written in quotes, as a structured-field string, is read without them.

What to do

Send a shorter key made of printable ASCII characters, such as a UUID.