Hello Martin Stewart ,
Despite our initial efforts, you're still facing the "InvalidResourceOperation" error. This issue often arises when Azure Communication Services attempts to deploy a resource while it's stuck in the "Accepted" state from a prior deployment. To address this, I suggest allowing the ongoing deployment to fully complete before proceeding further. It's also wise to review the deployment history to identify any lingering deployments causing interference. If necessary, you may need to perform a cleanup of the resource group. Following that, you can retry the deployment, ensuring that the resource isn't still undergoing provisioning. Additionally, exploring options like Azure CLI or ARM templates could provide deeper insights into the underlying issue.
If you found the solution helpful, consider accepting it.