azurerm_windows_web_app site config application stack is not in alignment with the supported versions

[vj-msft]

Is there an existing issue for this?

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Terraform Version

1.3.6

AzureRM Provider Version

3.37.0

Affected Resource(s)/Data Source(s)

azurerm_windows_web_app

Terraform Configuration Files

application_stack {
      current_stack  = try(var.site_config.runtime_stack, "dotnet")
      dotnet_version = try(var.site_config.dotnet_version, "v4.8")
    }

Debug Output/Panic Output

Error: expected site_config.0.application_stack.0.dotnet_version to be one of [v2.0 v3.0 core3.1 v4.0 v5.0 v6.0 v7.0], got v4.8

Expected Behaviour

Based on the portal experience, the current supported dotnet version for windows web app is

So expected terraform module to accept the same dotnet versions.

Actual Behaviour

Based on the documentation the terraform module currently accepts the below versions but few are not supported or available in windows web app.
dotnet_version - (Optional) The version of .NET to use when current_stack is set to dotnet. Possible values include v2.0,v3.0,core3.1, v4.0, v5.0, v6.0 and v7.0.

Steps to Reproduce

No response

Important Factoids

No response

References

No response

[jackofallops]

Hi @vj-msft - Thanks for opening this issue.
Unfortunately the values displayed in the portal and those actually used by the API do not align 1:1. Currently the service maps the values as:

Portal Value	API value
ASP.NET V3.5	v2.0
ASP.NET V4.8	v4.0
.NET 6 (LTS)	v6.0
.NET 7 (STS)	v7.0

These are reflected in #19685 and I'm adding the supporting documentation notes to this at the moment.

Hope this helps!

[vj-msft]

Thank you @jackofallops. This helps.

[jackofallops]

Thanks @vj-msft - I'm going to close this one out for now since it will be addressed by the above PR 👍

[github-actions]

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