You originally subscribed to a fixed version of an Endpoint Security and Control component, such as a specific version of Sophos Anti-Virus. Now, all you see is a long string such as 443DC50B-DFC1-4678-AC88-19965CAEA3B7#188.8.131.52 in the subscription details.
First seen in
Sophos Update Manager
The product you are subscribed to has retired. In order to stay protected, subscribe to a more recent version.
What To Do
Review your current software subscriptions. Consider setting your subscriptions so that they automatically update when the version you have selected retires. Double-click the name of the Subscription and select the option 'Automatically upgrade fixed version software when it is no longer supported by Sophos' in the Software Subscription dialog.
For more information on managing your software subscriptions see article 110302.