We are a manufacturer of steel bars in Kerala,We have purchased a motor from Kumar agencies (our creditor) functioned in Kerala.They purchased the same motor from marathon electric functioned in Kolkatta and directly delivered to our location.The first seller issued a tax invoice with Central excise and CST .In this invoice the name of buyer is Kumar agencies and the delivery location is our location. Our creditor has issued an invoice to us for the same goods.While filing sales tax return we have entered our creditors invoice no and amount.Now Our creditors asks for C form.We are hailing in same state.Then how can we issue C form.I expect a favorable reply.