internal
Status 500. Something went wrong at our end.
What it means
Something went wrong on our side. A points change or a cancel that fails this way does not use up its Idempotency-Key.
What to do
Send the request again; for a points change or a cancel, with the same Idempotency-Key, so it is never made twice. If it keeps happening, email support with the request_id.
Safe to send again?
Yes. Send exactly the same request again; for a points change or a cancel, with the same Idempotency-Key.
Every code, and the shape of an error answer: Errors.