# ServingRateLimitExceeded (/docs/errors/chain/ServingRateLimitExceeded)

`serve_axon` or `serve_prometheus` was called again before enough blocks passed since the neuron's last serving update. Check the axon's last update block in `Axons` against the `ServingRateLimit` (serving\_rate\_limit hyperparameter) and wait.

Declared by the `SubtensorModule` pallet; it classifies to the semantic code [`rate_limited`](/docs/errors/rate-limited).

## Remediation [#remediation]

Wait for the rate-limit window to pass, then retry

The same explanation is available in the terminal: `btcli explain ServingRateLimitExceeded`.