When the Returned Check Action Program (REACT) system successfully processes a limited
payability (LP) credit or LP correction (LPC), the Payment History Update System (PHUS)
creates a new EVENT 169 UNNEG CK. In most cases, REACT annotates the RCLRN field with
an “N” and produces a notice file. SSA mails the automated notice to the beneficiary
stating that our records show a particular check(s) remain uncashed.
The beneficiary has the option to circle the check(s) that they did not cash on the
notice and mail the notice back to us. However, numerous beneficiaries prefer to call
SSA or visit their local field office (FO) to request more information about the notice.