# WeightVecNotEqualSize (/docs/errors/chain/WeightVecNotEqualSize)

The `uids` and `values` vectors passed to a weight-setting call have different lengths, so they cannot be paired. Check the call arguments; both vectors must have exactly one value per UID.

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

## Remediation [#remediation]

Check the argument values against the operation schema

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