Choose a certificate to revoke

I connected a phone to my Macbook today to deploy an app to a device via Xcode. Once the symbol files finished processing, a dialog appeared stating, "Choose a certificate to revoke. Your account has reached the maximum number of certificates. To create a new one, you must choose a certificate to revoke."


I have no context about what this means or what these values map to. The table contains "Name" and "ID" columns which look like computer name's and UUIDs, but I can't gather enough info from them to figure out why I might be hitting a limit. I've never seen this dialog before. I'm hesistant to just pick one at random.


Has anyone else encountered this? I'm using Xcode 8.2 on macOS Sierra.

From the docs...

https://developer.apple.com/library/content/documentation/IDEs/Conceptual/AppDistributionGuide/MaintainingCertificates/MaintainingCertificates.html


Revoking Certificates

You revoke certificates when you no longer need them or when you want to re-create them because of another code signing issue (refer to Certificate Issues for the types of problems that can occur). You also revoke certificates if you suspect that they have been compromised. If you’re a team admin for an organization, you may want to revoke development certificates of team members who no longer work on your project. Revoking certificates may invalidate provisioning profiles, so read all the steps in Re-Creating Certificates and Updating Related Provisioning Profiles to avoid code signing issues later.

Important: Revoking development or distribution certificates doesn’t affect apps that you’ve submitted to the store nor does it affect your ability to update them.

Choose a certificate to revoke
 
 
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