The gross fiscal deficit is the government's total borrowing requirement in a year (total expenditure minus receipts excluding borrowing); the net fiscal deficit is the gross fiscal deficit minus the net lending (loans) the government itself extends to others, such as states and public enterprises.
The distinction (gross is total borrowing need; net subtracts government's own lending) is a precise budget-definition fact that can appear in matching form.
Gross fiscal deficit is the total borrowing requirement; net fiscal deficit subtracts the loans the government itself gives out; the headline FRBM figure is the gross deficit.
Gross fiscal deficit is total borrowing need; net fiscal deficit is gross minus the government's own net lending.