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1. Detailed Description of the Issue 
The A45 system was powered off through the AWS Console as part of a cost optimization initiative. Following the shutdown, system monitoring generated alerts indicating that the server was unavailable. These alerts were triggered because the system went down outside the active running state, although this behavior aligns with the planned operating schedule. 
2. GxP Impact 
Not required at the moment. 
3. Actions Taken 
The A45 system was powered off in the AWS Console to reduce infrastructure costs. 
Monitoring alerts were reviewed and confirmed to be expected behavior due to the system being stopped. 
The operating schedule was validated to ensure alignment with business requirements. 
4. Root Cause 
The alerts were generated because the server was stopped as part of the planned cost optimization activity. There was no technical failure or unplanned outage. 
5. Workaround 
The system will be powered on as needed based on business requirements or during scheduled maintenance activities. 
As per the current operating model, availability is limited to defined business hours only. 
6. Solution 
Under the current operating schedule, the A45 system is planned to be available only on weekdays between 07:30 CET and 18:00 CET. 
The system will be restarted when required for business operations or planned maintenance, thereby preventing unnecessary costs while maintaining required availability.