CHECK
bill Draft hai ya Finalized, aur patient ne paisa diya ya nahi. FIX: Draft → "Edit" se discount (mobile Disc% / Bill Discount, chart ke naye bill me "Discount" ₹, web editor me coupon). Finalized → Billing → Bills → row "⋮" → "Credit Note" (owner / admin; row se poore bill ka banta hai, aadhe ke liye Billing → Bills → Credit Notes). Paisa lautana ho to refund alag se karo. PREVENTION: standing offer ke liye Billing → Bills → Offers → Coupons me code banao.