Errors/Chain errors
ActivityCutoffFactorMilliOutOfBounds
Check the argument values against the operation schema
The factor_milli argument to set the activity-cutoff factor was outside the allowed 1000-50000 per-mille range (1 to 50 tempos). Adjust the argument to fall within those bounds before resubmitting.
Declared by the SubtensorModule pallet; it classifies to the semantic code invalid_argument.
Remediation
Check the argument values against the operation schema
The same explanation is available in the terminal: btcli explain ActivityCutoffFactorMilliOutOfBounds.