App Service Plan / Function App Zone Redundancy in West Europe is not available

Question

I am reaching out to you regarding a problem I am encountering when trying to create an App Service Plan with activated Zone Redundancy in the West Europe region. Despite the indications in the Azure documentation that zone redundancy should be available in this region, I am unable to activate this feature.

Each time I try to activate zone redundancy, I receive a BadRequest error message indicating that the requested features are not supported in the region. This is confusing, as according to the official Azure documentation, zone redundancy should be available for App Service Plans in the West Europe region: https://learn.microsoft.com/en-us/azure/reliability/reliability-functions?tabs=azure-portal#regional-availability

I suspected that this could be due to an outdated Azure App footprint and tried creating the App Service Plan with zone redundancy in a different resource group. However, the same error message still occurs.

The error message reads as follows when I try to roll out the desired configuration via Terraform:

Error: creating Service Plan: (Serverfarm Name "dev-backend-datastore-functions-app-service-plan-3" / Resource Group "dev-datastore-functions-thomas"): web.AppServicePlansClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="BadRequest" Message="Requested features are not supported in region. Please try another region." Details=[{"Message":"Requested features are not supported in region. Please try another region."},{"Code":"BadRequest"},{"ErrorEntity":{"Code":"BadRequest","ExtendedCode":"59911","Message":"Requested features are not supported in region. Please try another region.","MessageTemplate":"Requested features are not supported in region. Please try another region.","Parameters":[]}}]

I get the same error when I try to create the resource via the Azure Portal.

The steps I have taken to reproduce this problem are as follows:

1. Create an App Service Plan in the West Europe region on the Azure Portal or Terraform Azurerm Provider
2. Activate the "Zone Redundancy" option
3. Create the resource

It would be very helpful if you could check this matter and provide support. We would not like to perform a migration to another region, especially because, according to the Azure documentation, this configuration should be possible.

If there is a discrepancy between the current availability of features and the documentation, a clarification or update would be very welcome. For this, I also tried to create a ticket to Azure via the Azure Portal, but I was only served with automated responses and could not find where I could open a regular ticket to explain my situation to a human.

Thank you for your time and support. I would appreciate a prompt response.

Answer 1

@Gessel, Thomas

Thanks for reaching out to Microsoft Q&A, apologize for any inconvenience caused on this.

This more seems to be a capacity issue; I would suggest you try deploying your Azure App service plan/function app with zone redundancy to alternative region. If you still want to deploy the App service plan/function app in this specific region, I recommend you create a support ticket so that team can review and assist you further.

Feel free to reach back to me if you have any further questions on this.

Answer 2

This is really BAD

I just spent a whole day creating a Zone Redundant Appservice Environment which is a really expensive solution. And now when I try to create an app service plan in my newly created ASE I get this error!