IER 1 - Digital NOTAM Exchange (A3SG-IER-05) (A3SG-IER-05 Digital NOTAM Data Exchange - Aeronautical SWIM Services - SWIM Confluence (atlassian.net))
Reference
A3SG-IER-05 Digital NOTAM Data Exchange - Aeronautical SWIM Services - SWIM Confluence (atlassian.net)
https://swim-eurocontrol.atlassian.net/wiki/spaces/ASW/pages/60031194/A3SG-IER-05+Digital+NOTAM+Data+Exchange