Advance ruling requests clarify classification, notification applicability, time and value of supply, credit and registration issues under GST law. Advance ruling applications must be made in the prescribed form, manner and accompanied by the prescribed fee, stating the question. Permissible questions are confined to: classification of goods or services; applicability of notifications; determination of time and value of supply; admissibility of input tax credit; determination of liability to pay tax; requirement to register; and whether a particular act amounts to a supply.