Composition scheme option validity - loss of eligibility triggers regular tax liability and procedural withdrawal and stock reporting obligations. Validity of the composition scheme depends on continuous satisfaction of eligibility conditions; upon ceasing to satisfy conditions the taxpayer is liable to pay regular tax, must issue tax invoices thereafter, and must file a withdrawal intimation within seven days. An intending withdrawer must file the electronic withdrawal application before withdrawal. The proper officer may issue a show cause notice and, after receiving a reply, must pass an order either accepting or denying the composition option. A stock statement of inputs and goods must be furnished electronically on withdrawal or denial, and action for one place of business on a PAN is deemed to apply to all places on that PAN.