Azure Release Pipeline IISVirtualDirectory YAML - azure

Question

I'm having this Release created via Azure and its working perfectly. I have create the pipeline using YAML and i want to put the release in the same file. I'm using the "View YAML" approach for this to copy the YAML template and use it. But somehow its failing with this message:
ERROR ( message:Cannot find APP object with identifier "TEST01/". )
##[error]Process 'appcmd.exe' exited with code '1168'.
I guess im missing some other parameters or i really can't figure out how to use the same approach using YAML.
This is the code:
trigger:
- develop
stages:
- stage:
jobs:
- job: Build
displayName: Agent job 1
pool:
vmImage: ubuntu-latest
steps:
- checkout: self
- task: ArchiveFiles#2
displayName: Archive $(System.DefaultWorkingDirectory)
inputs:
rootFolderOrFile: "$(System.DefaultWorkingDirectory)"
includeRootFolder: false
- task: PublishBuildArtifacts#1
displayName: 'Publish Artifact: drop'
- stage:
jobs:
- job: Deploy
displayName: Deploy to IIS Dev
pool:
vmImage: windows-2019
steps:
- task: IISWebAppManagementOnMachineGroup#0
displayName: 'IIS Web App Manage'
inputs:
IISDeploymentType: iISVirtualDirectory
ParentWebsiteNameForVD: TEST01
VirtualPathForVD: /admin/test
PhysicalPathForVD: '%SystemDrive%\inetpub\_phpapps\test-center'
- task: IISWebAppDeploymentOnMachineGroup#0
displayName: 'IIS Web App Deploy'
inputs:
WebSiteName: "TEST01"
VirtualApplication: "/admin/test"
TakeAppOfflineFlag: True
XmlVariableSubstitution: True

Answer 1

After some research and testing seams like there is a new approach regarding deployment/releases.
Instead of using "Pipelines > Release" and create a release, if you are using the Yaml approach (defining stages etc.) you need to use it with "Environments". Create the group or environment and use it.
Two steps here are missing, one is the package and the other is env, where should be deployed.
So the solution for the above code is the following:
- stage: 'DeployTest'
displayName: 'DeployTest'
dependsOn: 'Build'
condition: and(succeeded(), eq(variables['Build.SourceBranchName'], 'develop'))
jobs:
- deployment: Test
displayName: Test
environment:
name: 'ENV-TEST-GROUP'
resourceType: VirtualMachine
strategy:
runOnce:
deploy:
steps:
- task: IISWebAppManagementOnMachineGroup#0
displayName: 'IIS Web App Manage'
inputs:
IISDeploymentType: iISVirtualDirectory
ParentWebsiteNameForVD: TEST01
VirtualPathForVD: /admin/test
PhysicalPathForVD: '%SystemDrive%\inetpub\_phpapps\test-center'
- task: IISWebAppDeploymentOnMachineGroup#0
displayName: 'IIS Web App Deploy'
inputs:
WebSiteName: "TEST01"
VirtualApplication: "/admin/test"
Package: $(Pipeline.Workspace)\drop\build_test.zip
TakeAppOfflineFlag: True
XmlVariableSubstitution: True