ARM Template

Deploying resources to Azure using ARM templates is generally quite easy given Azure’s native support in the generation of the template and availability of documentation. Although recently I got the following error and I spent more time than I thought I would, hence this post as a reference to myself and hopefully help others too.

The deployment error

The error I found while deploying was

{
    "Code": "NotFound",
    "Message": "Cannot find ServerFarm with name azure-functions-test-service-plan.",
    "Target": null,
    "Details": [
        {
            "Message": "Cannot find ServerFarm with name azure-functions-test-service-plan."
        },
        {
            "Code": "NotFound"
        },
        {
            "ErrorEntity": {
                "ExtendedCode": "51004",
                "MessageTemplate": "Cannot find {0} with name {1}.",
                "Parameters": [
                    "ServerFarm",
                    "azure-functions-test-service-plan"
                ],
                "Code": "NotFound",
                "Message": "Cannot find ServerFarm with name azure-functions-test-service-plan."
            }
        }
    ],
    "Innererror": null
}

The error says Cannot find ServerFarm with name azure-functions-test-service-plan. when I had the resource, also in the same resource group. Quite perplexing! After multiple attempts and then searching I found this Azure - can’t find serverfarm

Solution

The app service or function app being deployed has to be in the same region as the app service plan. And the error means it cannot locate the ServerFarm in the region of the app being deployed. So the solution is to ensure we are deploying the app to the same region as the app service plan.

I realized this after coming across this comment in the StackOverflow post linked above.

Issue was that I accidentally had the Function App in a different Azure Region than the App Service Plan it was referencing. Worth noting that this error can be caused by that.

Conclusion

This was a simple solution or possibly a user error, thanks for me not knowing that the region matters. Hope it is useful for your deployment. Thoughts and comments welcome.