In the last few days, we have received multiple emails from Avaya for alarm OP_MMTC20048 in our Session Manager 8.x, this is the information included in the email:
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-287.png)
After verifying the System Manager those alarms can be found in (as shown in the image below)
Services -> Events -> Logs -> Log Viewer
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-288.png)
Then applying the Event ID = OP_MMTC20048, all alarms are related to identity certificates used by Session Manager for different services:
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-289.png)
With all the previous information let’s the identity certificates in that Session Manager, navigate to
Services -> Inventory -> Manage Elements
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-290.png)
Then with the IP address or name select the Session Manager and click on
More Actions -> Manage Identity Certificates
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-291.png)
In the next page it displays the Valid To information (when certificate expires)
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-292.png)
To renew the certificates, select one by one each entry and select the renew button, this is not a service impacting but changes will be applied until Session Manager is rebooted (apply the renewal under a maintenance window to renew all certificates and reboot).
![](https://whereismyvoicepacket.com/wp-content/uploads/2022/10/image-293.png)
This concludes this entry.