The Mississippi Notice of Social Security Number In Bankruptcy Case is a document that must be filed in Mississippi bankruptcy cases. It serves to inform the court that the debtor has provided his or her Social Security Number (SSN) to the court. The Notice notifies the court that the debtor’s SSN is required for the administration of the bankruptcy case. There are two types of Mississippi Notice of Social Security Number In Bankruptcy Case: Form B-11 and Form B-12. Form B-11 is used when the debtor is filing for Chapter 7 bankruptcy, and Form B-12 is used when the debtor is filing for Chapter 13 bankruptcy. Both forms require the debtor to provide his or her name, address, SSN, date of birth, and any other information necessary for the court to properly administer the bankruptcy case.