# InvalidBatchLength (/docs/errors/chain/InvalidBatchLength)

A per-subnet weight batch (`batch_set_weights`, `batch_commit_weights`, `batch_reveal_weights`) was empty or had more items than there are networks. Send at least one item and at most one per subnet.

Declared by the `SubtensorModule` pallet; it classifies to the semantic code [`invalid_argument`](/docs/errors/invalid-argument).

Declared at [`pallets/subtensor/src/macros/errors.rs#L397`](/code/pallets/subtensor/src/macros/errors.rs#L397).

## Remediation [#remediation]

Check the argument values against the operation schema

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