Function solana_stake_program::stake_state::validate_delegated_amount

fn validate_delegated_amount(
    account: &BorrowedAccount<'_>,
    meta: &Meta,
    feature_set: &FeatureSet
) -> Result<ValidatedDelegatedInfo, InstructionError>

Ensure the stake delegation amount is valid. This checks that the account meets the minimum balance requirements of delegated stake. If not, return an error.