When the 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.