idempotency-key-missing

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

What happened

A POST or a PATCH reached a route that requires an Idempotency-Key, and the request carried none.

What to do

Send the request again with an Idempotency-Key header, a new key for a new request and the same key for every retry of it. A UUID is a good key.