If you are encountering this error it means that either:

  • Aurora has not received a confirmation from the Core server that the transaction you are trying to submit to the network was included in a ledger in a timely manner or:
  • Aurora has not sent a response to a reverse-proxy before in a specified time.

The former case may happen because there was no room for your transaction in the 3 consecutive ledgers. In such case, Core server removes a transaction from a queue. To solve this you can:

  • Keep resubmitting the same transaction (with the same sequence number) and wait until it finally is added to a new ledger or:
  • Increase the fee.


As with all errors Aurora returns, timeout follows the Problem Details for HTTP APIs draft specification guide and thus has the following attributes:

Attribute Type Description
Type URL The identifier for the error. This is a URL that can be visited in the browser.
Title string A short title describing the error.
Status Number An HTTP status code that maps to the error.
Detail string A more detailed description of the error.
Instance string A token that uniquely identifies this request. Allows server administrators to correlate a client report with server log files.
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