Errors/Chain errors
RevealPeriodTooLarge
Check the argument values against the operation schema
set_reveal_period was given a commit-reveal period above the compiled-in maximum number of epochs. Lower the reveal_period argument; the current setting is readable from RevealPeriodEpochs for the netuid.
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 RevealPeriodTooLarge.