Brodie

@rajish, not sure if this is a recent change from Microsoft but when I call [this](https://docs.microsoft.com/en-us/graph/api/serviceprincipal-addtokensigningcertificate?view=graph-rest-1.0&tabs=http) endpoint, and point to an existing service principal I've created with Terraform (that doesn't...

Thanks @acdha that's done the trick for me 👍 .

> Might be worth leaving the issue open until there's documentation since this is currently opaque @acdha Reopened