# UidMapCouldNotBeCleared (/docs/errors/chain/UidMapCouldNotBeCleared)

During a UID reshuffle or trim, clearing the subnet's `Uids` map left residual entries (the storage clear returned a cursor). Internal state inconsistency rather than a caller error; inspect the `Uids` storage for the netuid and report it.

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

## Remediation [#remediation]

A chain-side invariant failed; nothing to fix client-side — report it if it persists

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