# TooManyRegistrationsThisBlock (/docs/errors/chain/TooManyRegistrationsThisBlock)

Registrations in the current block already reached the subnet's per-block cap (`MaxRegistrationsPerBlock`, the max\_regs\_per\_block hyperparameter); root registration enforces the same cap on netuid 0. Retry in the next block.

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 TooManyRegistrationsThisBlock`.