131. In general.

A creditor's petition may be presented to the court in respect of a debt or debts only if (inter alia) the debt, or each of the debts, is for a liquidated sum payable to the petitioning creditor, or one or more of the petitioning creditors, either immediately or at some certain, future time, and is unsecured1. Where the petitioning creditor serves a statutory demand, the demand must specify whether it is made in respect of a debt payable immediately or a debt not so payable2. If the amount claimed includes any charge by way of interest not previously notified