You do not have to sign a reafirmation agreement or any other kind of document to do this. You do not have to pay a secured claim if the debt has been discharged, but the creditor can still take your property. Even if a debt can be discharged, you may have special reasons why you want to promise to pay it. For example, you may want to work out a plan with the bank to keep your car. To promise to pay that debt, you must sign and file a reaffirmation agreement with the Court.
Reaffirmation agreements are under special rules and are voluntary.
They are not required by bankruptcy law or by any other law. Can be canceled anytime before the Court issues your discharge or within 60 days after the agreement is filed with the Court, whichever gives you the most time. If you are an individual and you are not represented by an attorney, the Court must hold a hearing to decide whether to approve the reaffirmation agreement. The agreement will not be legally binding until the Court approves it. If you reaffirm a debt and then fail to pay it, you owe the debt the same as though there was no bankruptcy.