"Idempotency key" is a widely accepted term [1] for this concept; arguably, you could call it "Deduplication key" instead, but I think this ship has sailed. [1

"Idempotency key" is a widely accepted term [1] for this concept; arguably, you could call it "Deduplication key" instead, but I think this ship has sailed. [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Idempotency-Key https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/...