# TooBig (/docs/errors/chain/TooBig)

The preimage exceeds the maximum size the pallet will store on-chain (4 MiB). Check the byte length of the preimage against the pallet's `MAX_SIZE` limit before noting it.

Declared by the `Preimage` pallet; it classifies to the semantic code [`limit_exceeded`](/docs/errors/limit-exceeded).

## Remediation [#remediation]

A chain-side capacity limit was hit; reduce the size or count of the request

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