You need to be completely open and honest about your finances (known as ‘financial disclosure’). This helps ensure that your ex-partner does not challenge the Agreement and/or the court does not refuse to uphold it.
Open and honest financial disclosure includes each party clearly setting out their debts, savings, investments, assets and property. Dishonest financial disclosure will likely invalidate your Separation Agreement, meaning that you will not be able to rely on it in the future.