📢 Action required: Update the Solr Adapter to version 7.3

For projects running on ICM 14 that use Solr

We are preparing to upgrade the Solr version from 8 to 9. This is an infrastructure update and will not change the functionality of your search implementation. The rollout date has not yet been scheduled. It will be carried out carefully and without downtime.

What you need to do

Please update the Solr Adapter used by your project to the latest version, 7.3. This is the only prerequisite that must be completed by you. Version 7.3 is compatible with all ICM 14 releases, so you can perform the update at any time.For further information, see the Public Release Note: SolrCloud Search Service Adapter 7.If you use Solr in a local development environment, a new version of the icm-docker-plugin is also available for Solr 9. Please follow the migration guide.

After the update

Once the adapter has been updated, please notify us by opening a short ticket with the Service Desk. We will use this ticket to coordinate the Solr 9 rollout across your environments.If your project contains Solr customizations, test them in DEV or INT and make any necessary adjustments before the UAT and PROD rollouts.

Looking ahead to Solr 10

To remain on current and supported versions, we are already planning the Solr 10 update for ICM 15 in Q1 2027. The migration path is Solr 8 → Solr 9 → Solr 10. The Solr 9 migration is therefore mandatory and cannot be skipped.