This form is used by the Social Security Administration (SSA) to identify terminated employees who are entitled to distributions but haven’t taken them yet. For example, if a plan participant terminates employment in 2017 and didn’t take withdraw their retirement plan benefit by December 31, 2021, the participant is listed on the 2021 Form 8955-SSA with a code A. This indicates that the participant should be added to the SSA database. If the participant receives their benefit in the future, they’ll be reported on the Form 8955-SSA for the year of distribution with code D to indicate that the participant should be deleted from the SSA database.