Errors/Chain errors
InsufficientTaoBalance
Fund the signing account or reduce the amount; check with `btcli wallet balance`
The coldkey's free TAO balance is below the amount a TAO-side operation needs: a transfer between coldkeys, a burn or recycle, or a subnet-registration lock. Check the coldkey's balance with btcli wallet balance against the amount being moved.
Declared by the SubtensorModule pallet; it classifies to the semantic code insufficient_balance.
Remediation
Fund the signing account or reduce the amount; check with btcli wallet balance
The same explanation is available in the terminal: btcli explain InsufficientTaoBalance.