Hello @Lily , Thank you for reaching out. Unfortunately, there is no way to figure out where an AKV certificate is being used. The reason behind that is, you just keep your secrets, keys, and certificates in Azure Key Vault and access them programmatically using REST APIs only when needed. The AKV doesn't keep or maintain any records of where or how these objects (keys, secrets and certificates) stored in Key Vault are used.
Hope this helps.
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