Rectify the following errors:
Goods purchased from Kunal for Rs. 8,000 and from Kapil of Rs. 9,000 recorded correctly in the Purchases Book. However, Rs. 9,000 was posted to Kunal and Rs. 8,000 to Kapil.
(ii) Anil's Account was excess debited by Rs. 500 while Suraj's Account was short debited by Rs. 500.
(iii) Parkar's Account was short credited by Rs. 700 while Manish's Account was excess credited by Rs. 700.
(iv) Goods sold to Roopak for Rs. 1,000 and to Sagar for Rs. 1,800 recorded correctly in the Sales Book. However, Rs. 1,800 was posted to Roopak and Rs. 1,000 to Sagar.