Either party to a marriage may apply to the Family Court of Australia for a divorce, or both parties may apply jointly. However, an application for divorce cannot be filed before the expiration of at least two years since the marriage had been entered into. The application can be lodged online or using a hard copy form. A fee is payable. If the application is made by one spouse (called a "sole application"), the divorce documents must be served on the other spouse, at least 28 days before the court hearing if the spouse is in Australia or 42 days if overseas. The spouse can challenge the application in a "response", claiming, for example, that the timeframes set out in the Act have not been satisfied, or that the applicant is not an Australian citizen or resident, etc. The response must also be served on the applicant and filed in court. If both spouses agree to divorce a "joint application" is filed, which does not need to be served and no response can be made.