AzureResourceManagerTemplateDeployment@3 task is linted as an error

[toni-miettinen]

I have a valid pipeline with an AzureResourceManagerTemplateDeployment@3 task.
In the editor, it says this line is invalid because it does not match the pattern of "^PowerShell@2$".
That does not make sense to me, why would this exact task have to be a powershell one.

The pipeline runs fine in DevOps.

Repro:

stages:
- stage: deployResources
  displayName: 'Deploy resource group'
  jobs:
  - job: deploymentGroup
    displayName: 'run deployment group'
    steps:
    - task: AzureResourceManagerTemplateDeployment@3
      inputs:
        deploymentMode: Incremental
        connectedServiceName: 'service-connection'
        deploymentName: $(Build.BuildNumber)
        location: 'westeurope'
        resourceGroupName: 'rg-demo'
        csmFile: 'Pipeline/main.bicep'
        overrideParameters: >-
          -env "demo"

[winstliu]

You are accidentally using the YAML extension to validate your Azure Pipelines file, which is not supported. In the lower right, you should change the language from YAML to Azure Pipelines (or Change Language Mode in the Command Palette).
Let me know if that doesn't solve your issue!