# Correction & Modification Register now available *Published: 2026-09-03* A new Correction & Modification Register is now available across the AQ Portal, AQ eReporting Guide and AQ eReference Guide. The register provides a centralised and transparent overview of identified errors, corrections and requested modifications affecting the Air Quality reporting system and its supporting documentation. It also allows users to follow the status of reported issues and proposed changes. Users who identify an error or inconsistency, or who would like to request a modification, are invited to contact the AQ IPR helpdesk at aqipr.helpdesk@eionet.europa.eu. Requests will be reviewed by the AQ team and, where appropriate, included in the register for follow-up.