We are a small saree manufacturer at Surat. We buy ready dyed fabrics and get job work, hand work, stitching etc. done to create designer sarees. Wholesalers and retailers from all over India buy these sarees on credit basis for 30 days to 240 days.Whatever is sold, 15-30% is returned. What would be treatment of goods returned and how would I adjust my taxliability if the entire GST has already been paid?