Sometimes the amounts deposited by you does not tally with the amounts
of PMF, PMIDF. In such a case you may edit the amounts as auto
calculated by this module. To do so you must fill the amount of VAT &
Surcharge. You should then check the 'Edit' checkbox in challan window.
Upon checking the edit checkbox you will observe that color of two
prompts changes to pink as shown below. These are the amounts which
you may be edited.