Change in "Idempotency-Key" header from Error 500 to 400

As per the previous notices, the error codes for API calls that use the Idempotency-Key header have now been changed from Error 500 to Error 400.

With this change, Fireblocks API will return the following error after the first failed API call:

Error 400 - “This operation doesn't support the usage of the same idempotency key after an internal error”

For any questions, please contact Fireblocks Support by submitting a request.