Woowallet/Terawallet max limits

Use below updated code.

add_filter('is_valid_payment_through_wallet', '__return_false');
add_filter('woo_wallet_partial_payment_amount', 'woo_wallet_partial_payment_amount_callback', 100);

function woo_wallet_partial_payment_amount_callback($amount) {
    if (sizeof(WC()->cart->get_cart()) > 0) {
        $totals = WC()->cart->get_totals();
        $cart_total = $totals['subtotal'] + $totals['shipping_total'] + $totals['subtotal_tax'] + $totals['shipping_tax'];
        $amount = ($cart_total * 15) / 100;
        if ($amount > woo_wallet()->wallet->get_wallet_balance(get_current_user_id(), 'edit')) {
            $amount = woo_wallet()->wallet->get_wallet_balance(get_current_user_id(), 'edit') < 1000 ? woo_wallet()->wallet->get_wallet_balance(get_current_user_id(), 'edit') : 1000;
        }
    }
    return $amount;
}