What conditions must subsidiary legislation meet before it can be properly as iaw?

Subsidiary legislation must meet specific conditions to be considered valid, including adherence to the authority granted by the parent statute, compliance with procedural requirements (such as public consultation or notification), and consistency with existing laws and constitutional provisions. Additionally, it must be published in an accessible manner to ensure transparency and public awareness. Failure to meet any of these conditions can render the subsidiary legislation invalid or challengeable in court.