A seller is seeking advice after a buyer, 10 years post-sale, requested a plot number correction from '618A/1' to '618A/2' due to a bank verification issue. The seller has documentation proving the original number for 30 years and questions their responsibility, especially since official bodies like the municipality and electricity board haven't flagged the discrepancy. They are also concerned about potential harassment from the buyer who is unwilling to cover rectification costs.