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Verify the alarm is informational only by checking the alarm class - it should not require acknowledgment or cause system stoppage.

Access the Service menu and navigate to System Data > License Keys to confirm which features are now active.

Document the newly activated license features in your system configuration records for future reference.

Clear the alarm message from the display. No further action is required unless unexpected features were activated.

Check if a recent software update, CF card replacement, or system restore was performed that would trigger license revalidation.

Compare current license status with pre-update documentation to ensure all previously active options remain enabled.

If licensed options are missing after update, contact Siemens with your system serial number and license certificates.

Test critical machine functions dependent on licensed options (e.g., transformation packages, additional axes, high-speed machining).

Create a backup of the current system configuration including license data using the Archive function.

Review system access logs and event history to determine who initiated the license change and when it occurred.

Unauthorized license modifications may violate service agreements and could cause unexpected system behavior.

Verify machine functionality has not been affected by comparing current operational capabilities with baseline performance.

If license change was unauthorized, restore from a known-good backup and implement password protection on service-level access.

Contact Siemens support to verify license integrity if unexpected behavior occurs or if license status appears incorrect.