As previously announced in Deutsche Börse Circular 042/26, Deutsche Börse will perform a validation of the cable length adjustment approach on selected Deutsche Börse Order Entry A-side connections.

The purpose of the validation is to confirm the planned adjustment approach under controlled conditions ahead of the broader cable length normalization of Deutsche Börse participant connections currently planned for Q3/2027.

Participants with affected connections will be requested to verify connectivity to the Connection Gateways and confirm receipt of technical heartbeat messages following the maintenance activity.

The cable length adjustment activities are planned during the following maintenance windows:

This timetable is also available in the T7 Weekend Maintenance/Activity Overview.

Only one validation activity is currently expected. The second date is reserved as a contingency window should additional activities be required. Affected connections will be temporarily interrupted during the respective maintenance activity.

In case of issues, participants may contact their Technical Key Account Manager via their VIP number or cts@deutsche-boerse.com during the support window.