PWG MFD Alerts v1.1 (MFD Alerts) has been approved as PWG Candidate Standard 5107.3-2019.
This document defines an update to the IANA-PRINTER-MIB (originally published in RFC 3805) to provide support for SNMP alerts in a multifunction device (MFD) and an equivalent update to IPP “printer-state-reasons” [STD92] and IPP “printer-alert” [PWG5100.9].
https://ftp.pwg.org/pub/pwg/candidates/cs-pwgmfdalerts11-20190412-5107.3.pdf