Do not file Form 1099-C when fraudulent debt is canceled due to identity theft. Form 1099-C is to be used only for cancellations of debts for which the debtor actually incurred the underlying debt. File Form 1099-C, Cancellation of Debt, for each debtor for whom you canceled a debt owed to you of $600 or more if:
If, in the same calendar year, you cancel a debt of $600 or more in connection with a foreclosure or abandonment of secured property, it is not necessary to file both Form 1099-A, Acquisition or Abandonment of Secured Property, and Form 1099-C for the same debtor. You may file Form 1099-C only. You will meet your Form 1099-A filing requirement for the debtor by completing boxes 4, 5, and 7 on Form 1099-C. However, you may file both Forms 1099-A and 1099-C; if you do file both forms, do not complete boxes 4, 5, or 7 on Form 1099-C. See the instructions for Form 1099-A, earlier, and Box 4, Box 5, and Box 7, later.
File Form 1099-C if you are:
You are not required to report on Form 1099-C the following.
A debt is incurred for business if it is incurred in connection with the conduct of any trade or business other than the trade or business of performing services as an employee. A debt is incurred for investment if it is incurred to purchase property held for investment (as defined in section 163(d)(5)).
For more information visit: https://www.irs.gov/instructions/i1099ac/index.html