# How should I use Idempotency-Key when retrying session creation?

**URL:** <https://protoface.discourse.group/t/how-should-i-use-idempotency-key-when-retrying-session-creation/39>\
**Category:** APIs\
**Created:** [July 6, 2026, 5:43pm UTC](https://protoface.discourse.group/t/how-should-i-use-idempotency-key-when-retrying-session-creation/39 "2026-07-06T17:43:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![proton](https://avatars.discourse-cdn.com/v4/letter/p/8491ac/32.png) [@proton](https://protoface.discourse.group/u/proton)\
**Post date:** [July 6, 2026, 5:43pm UTC](https://protoface.discourse.group/t/how-should-i-use-idempotency-key-when-retrying-session-creation/39/1 "2026-07-06T17:43:25Z")

</div>

Use one unique `Idempotency-Key` per intended session.

If you need to retry, send the same request body with the same key. Reusing that key with a different body can cause a conflict. Keys are remembered for 24 hours, so use a fresh one for each new session.