Two key federal unions on Nov. 2 argued a lower court got it wrong in a 2017 ruling that dismissed a suit against the Office of Personnel Management related to the agency’s massive 2014 data breach.

The American Federation of Government Employees and the National Treasury Employees Union made arguments before the D.C. Circuit Court of Appeals Nov. 2 that their lawsuits against OPM over that agency’s 2015 data breaches were wrongfully dismissed by a lower court.

The OPM data breaches, which occurred sometime in 2014 and were discovered in 2015, impacted almost 22 million records of federal employees, contractors, their families and those that had applied for federal jobs.

AFGE and NTEU brought suits against OPM on behalf of their members and other federal employees that had been impacted by the breach.