The template parameters 'undefined' in the parameters file are not valid when using Create Azure DevTest Labs VM

Hello,

I've just find out the ms-azuredevtestlabs.tasks.azure-dtl-task-createvm.AzureDevTestLabsCreateVM@3 stopped working, because of adding undefined parameter with same value.

```yaml
steps:
- task: ms-azuredevtestlabs.tasks.azure-dtl-task-createvm.AzureDevTestLabsCreateVM@3
displayName: 'Create Azure DevTest Labs VM'
inputs:
azureSubscription: '[REDACTED]'
LabId: '[REDACTED]'
VirtualMachineName: test
TemplateFile: arm/vm.json
ParametersFile: arm/vm.parameters.json
```

```json
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json",
"contentVersion": "1.0.0.0",
"parameters": {
"newVMName": {
"type": "string"
},
"labName": {
"type": "string",
"defaultValue": "devtest"
},
"size": {
"type": "string",
"defaultValue": "Standard_DS2_v2"
},
"userName": {
"type": "string",
"defaultValue": "[REDACTED]"
},
"password": {
"type": "securestring",
"defaultValue": "[[VmPassword]]"
},
"Azure_Pipelines_Deployment_Group_Agent_accountUrl": {
"type": "string",
"defaultValue": "[REDACTED]"
},
"Azure_Pipelines_Deployment_Group_Agent_projectName": {
"type": "string",
"defaultValue": "[REDACTED]"
},
"Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName": {
"type": "string",
"defaultValue": "[REDACTED]"
},
"Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken": {
"type": "securestring",
"defaultValue": "[[PAT]]"
},
"Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags": {
"type": "string",
"defaultValue": "WEB, DB"
},
"Azure_Pipelines_Deployment_Group_Agent_agentInstallPath": {
"type": "string",
"defaultValue": ""
},
"Azure_Pipelines_Deployment_Group_Agent_agentName": {
"type": "string",
"defaultValue": ""
},
"Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon": {
"type": "bool",
"defaultValue": false
},
"Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount": {
"type": "string",
"defaultValue": "NT AUTHORITY\\NetworkService"
},
"Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword": {
"type": "securestring"
}
},
"variables": {
"labSubnetName": "[concat(variables('labVirtualNetworkName'), 'Subnet')]",
"labVirtualNetworkId": "[resourceId('Microsoft.DevTestLab/labs/virtualnetworks', parameters('labName'), variables('labVirtualNetworkName'))]",
"labVirtualNetworkName": "[concat('Dtl', parameters('labName'))]",
"vmId": "[resourceId ('Microsoft.DevTestLab/labs/virtualmachines', parameters('labName'), parameters('newVMName'))]",
"vmName": "[concat(parameters('labName'), '/', parameters('newVMName'))]"
},
"resources": [
{
"apiVersion": "2018-10-15-preview",
"type": "Microsoft.DevTestLab/labs/virtualmachines",
"name": "[variables('vmName')]",
"location": "[resourceGroup().location]",
"properties": {
"labVirtualNetworkId": "[variables('labVirtualNetworkId')]",
"notes": "s001ci",
"customImageId": "[REDACTED]",
"size": "[parameters('size')]",
"userName": "[parameters('userName')]",
"password": "[parameters('password')]",
"isAuthenticationWithSshKey": false,
"artifacts": [
{
"artifactId": "[resourceId('Microsoft.DevTestLab/labs/artifactSources/artifacts', parameters('labName'), 'public repo', 'windows-wsl')]"
},
{
"artifactId": "[resourceId('Microsoft.DevTestLab/labs/artifactSources/artifacts', parameters('labName'), 'public repo', 'windows-deploymentgroup')]",
"parameters": [
{
"name": "accountUrl",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_accountUrl')]"
},
{
"name": "projectName",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_projectName')]"
},
{
"name": "deploymentGroupName",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName')]"
},
{
"name": "PersonalAccessToken",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken')]"
},
{
"name": "deploymentAgentTags",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags')]"
},
{
"name": "agentInstallPath",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_agentInstallPath')]"
},
{
"name": "agentName",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_agentName')]"
},
{
"name": "RunAsAutoLogon",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon')]"
},
{
"name": "windowsLogonAccount",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount')]"
},
{
"name": "windowsLogonPassword",
"value": "[parameters('Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword')]"
}
]
}
],
"labSubnetName": "[variables('labSubnetName')]",
"disallowPublicIpAddress": false,
"storageType": "Premium",
"allowClaim": false
}
}
],
"outputs": {
"labVMId": {
"type": "string",
"value": "[variables('vmId')]"
}
}
}
````

```log
2021-05-20T22:36:26.2295149Z ##[debug]Evaluating condition for step: 'Create Azure DevTest Labs VM'
2021-05-20T22:36:26.2297047Z ##[debug]Evaluating: succeeded()
2021-05-20T22:36:26.2297618Z ##[debug]Evaluating succeeded:
2021-05-20T22:36:26.2298689Z ##[debug]=> True
2021-05-20T22:36:26.2299309Z ##[debug]Result: True
2021-05-20T22:36:26.2299930Z ##[section]Starting: Create Azure DevTest Labs VM
2021-05-20T22:36:26.2412456Z ==============================================================================
2021-05-20T22:36:26.2412865Z Task : Azure DevTest Labs Create VM
2021-05-20T22:36:26.2413169Z Description : Create an Azure DevTest Labs VM
2021-05-20T22:36:26.2413444Z Version : 3.0.16
2021-05-20T22:36:26.2413695Z Author : Microsoft Corporation
2021-05-20T22:36:26.2414039Z Help : Creates a virtual machine in the selected lab.
2021-05-20T22:36:26.2414397Z ==============================================================================
2021-05-20T22:36:26.2640380Z ##[debug]Using node path: C:\agents\2.186.1\externals\node10\bin\node.exe
2021-05-20T22:36:26.6623420Z ##[debug]agent.TempDirectory=D:\a\_temp
2021-05-20T22:36:26.6642539Z ##[debug]loading inputs and endpoints
2021-05-20T22:36:26.6660213Z ##[debug]loading ENDPOINT_AUTH_[REDACTED]
2021-05-20T22:36:26.6885860Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_[REDACTED]_AUTHENTICATIONTYPE
2021-05-20T22:36:26.6888045Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_[REDACTED]_SERVICEPRINCIPALID
2021-05-20T22:36:26.6889919Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_[REDACTED]_SERVICEPRINCIPALKEY
2021-05-20T22:36:26.6891691Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_[REDACTED]_TENANTID
2021-05-20T22:36:26.6893406Z ##[debug]loading ENDPOINT_AUTH_PARAMETER_SYSTEMVSSCONNECTION_ACCESSTOKEN
2021-05-20T22:36:26.6895022Z ##[debug]loading ENDPOINT_AUTH_SCHEME_[REDACTED]
2021-05-20T22:36:26.6896583Z ##[debug]loading ENDPOINT_AUTH_SCHEME_SYSTEMVSSCONNECTION
2021-05-20T22:36:26.6898097Z ##[debug]loading ENDPOINT_AUTH_SYSTEMVSSCONNECTION
2021-05-20T22:36:26.6902543Z ##[debug]loading INPUT_APPENDRETRYNUMBERTOVMNAME
2021-05-20T22:36:26.6904124Z ##[debug]loading INPUT_CONNECTEDSERVICENAME
2021-05-20T22:36:26.6905883Z ##[debug]loading INPUT_DELETEFAILEDDEPLOYMENTBEFORERETRY
2021-05-20T22:36:26.6907517Z ##[debug]loading INPUT_DELETEFAILEDLABVMBEFORERETRY
2021-05-20T22:36:26.6909151Z ##[debug]loading INPUT_FAILONARTIFACTERROR
2021-05-20T22:36:26.6910712Z ##[debug]loading INPUT_LABID
2021-05-20T22:36:26.6913088Z ##[debug]loading INPUT_PARAMETERSFILE
2021-05-20T22:36:26.6914529Z ##[debug]loading INPUT_RETRYCOUNT
2021-05-20T22:36:26.6916090Z ##[debug]loading INPUT_RETRYONFAILURE
2021-05-20T22:36:26.6917678Z ##[debug]loading INPUT_TEMPLATEFILE
2021-05-20T22:36:26.6919260Z ##[debug]loading INPUT_VIRTUALMACHINENAME
2021-05-20T22:36:26.6920911Z ##[debug]loading INPUT_WAITMINUTESFORAPPLYARTIFACTS
2021-05-20T22:36:26.6931153Z ##[debug]loaded 21
2021-05-20T22:36:26.6936168Z ##[debug]Agent.ProxyUrl=undefined
2021-05-20T22:36:26.6937384Z ##[debug]Agent.CAInfo=undefined
2021-05-20T22:36:26.6938838Z ##[debug]Agent.ClientCert=undefined
2021-05-20T22:36:26.6940223Z ##[debug]Agent.SkipCertValidation=undefined
2021-05-20T22:36:26.9106044Z Starting Azure DevTest Labs Create VM Task
2021-05-20T22:36:26.9117037Z ##[debug]ConnectedServiceName=[REDACTED]
2021-05-20T22:36:26.9119258Z ##[debug]RetryOnFailure=false
2021-05-20T22:36:26.9120884Z ##[debug]AppendRetryNumberToVmName=false
2021-05-20T22:36:26.9122401Z ##[debug]DeleteFailedDeploymentBeforeRetry=false
2021-05-20T22:36:26.9123758Z ##[debug]DeleteFailedLabVMBeforeRetry=false
2021-05-20T22:36:26.9125111Z ##[debug]FailOnArtifactError=false
2021-05-20T22:36:26.9126694Z ##[debug]LabId=/subscriptions/[REDACTED]/resourceGroups/[REDACTED]/providers/Microsoft.DevTestLab/labs/devtest
2021-05-20T22:36:26.9127590Z ##[debug]ParameterOverrides=undefined
2021-05-20T22:36:26.9129570Z ##[debug]ParametersFile=D:\a\1\s\arm\vm.parameters.json
2021-05-20T22:36:26.9130643Z ##[debug][REDACTED] data SubscriptionId = [REDACTED]
2021-05-20T22:36:26.9131808Z ##[debug]TemplateFile=D:\a\1\s\arm\vm.json
2021-05-20T22:36:26.9132617Z ##[debug]VirtualMachineName=test
2021-05-20T22:36:26.9133371Z ##[debug]WaitMinutesForApplyArtifacts=0
2021-05-20T22:36:26.9134489Z ##[debug]ResourceUtil: Getting ARM client instance.
2021-05-20T22:36:26.9137828Z ##[debug]ConnectedServiceName=[REDACTED]
2021-05-20T22:36:26.9140696Z ##[debug][REDACTED] auth param ServicePrincipalId = ***
2021-05-20T22:36:26.9142148Z ##[debug][REDACTED] auth param ServicePrincipalKey = ***
2021-05-20T22:36:26.9143182Z ##[debug][REDACTED] auth param TenantId = ***
2021-05-20T22:36:26.9144156Z ##[debug]ResourceUtil: Login using ConnectedServiceName '[REDACTED]'.
2021-05-20T22:36:28.0097458Z ##[debug]ResourceUtil: Getting DTL client instance.
2021-05-20T22:36:28.0106855Z ##[debug]ConnectedServiceName=[REDACTED]
2021-05-20T22:36:28.0109143Z ##[debug][REDACTED] auth param ServicePrincipalId = ***
2021-05-20T22:36:28.0110855Z ##[debug][REDACTED] auth param ServicePrincipalKey = ***
2021-05-20T22:36:28.0112220Z ##[debug][REDACTED] auth param TenantId = ***
2021-05-20T22:36:28.0114027Z ##[debug]ResourceUtil: Login using ConnectedServiceName '[REDACTED]'.
2021-05-20T22:36:28.0115340Z Task called with the following parameters:
2021-05-20T22:36:28.0116078Z ConnectedServiceName = [REDACTED]
2021-05-20T22:36:28.0117027Z LabId = /subscriptions/[REDACTED]/resourceGroups/[REDACTED]/providers/Microsoft.DevTestLab/labs/devtest
2021-05-20T22:36:28.0117907Z VirtualMachineName = test
2021-05-20T22:36:28.0118526Z TemplateFile = D:\a\1\s\arm\vm.json
2021-05-20T22:36:28.0120264Z ParametersFile = D:\a\1\s\arm\vm.parameters.json
2021-05-20T22:36:28.0120932Z FailOnArtifactError = false
2021-05-20T22:36:28.0121504Z RetryOnFailure = false
2021-05-20T22:36:28.0122035Z RetryCount = 0
2021-05-20T22:36:28.0122593Z DeleteFailedLabVMBeforeRetry = false
2021-05-20T22:36:28.0123234Z DeleteFailedDeploymentBeforeRetry = false
2021-05-20T22:36:28.0123876Z AppendRetryNumberToVMName = false
2021-05-20T22:36:28.0124533Z WaitMinutesForApplyArtifacts = 0
2021-05-20T22:36:28.0125269Z Creating Virtual Machine in Lab '[REDACTED]' under Resource Group '[REDACTED]'.
2021-05-20T22:36:28.0126068Z Invoking deployment with the following parameters:
2021-05-20T22:36:28.0126754Z DeploymentName = Dtlgr0yny9un
2021-05-20T22:36:28.0127325Z ResourceGroupName = [REDACTED]
2021-05-20T22:36:28.0127879Z LabName = [REDACTED]
2021-05-20T22:36:28.0128393Z VmName = test
2021-05-20T22:36:28.0128971Z TemplateFile = D:\a\1\s\arm\vm.json
2021-05-20T22:36:28.2507811Z { Error: Deployment template validation failed: 'The template parameters 'undefined' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are 'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.'.
2021-05-20T22:36:28.2513528Z at new t (D:\a\_tasks\AzureDevTestLabsCreateVM_65b23b71-d518-4074-8370-cf84ebfc909b\3.0.16\task.js:2:369869)
2021-05-20T22:36:28.2516851Z at D:\a\_tasks\AzureDevTestLabsCreateVM_65b23b71-d518-4074-8370-cf84ebfc909b\3.0.16\task.js:2:359495
2021-05-20T22:36:28.2518582Z at process._tickCallback (internal/process/next_tick.js:68:7)
2021-05-20T22:36:28.2520924Z code: 'InvalidTemplate',
2021-05-20T22:36:28.2522285Z statusCode: 400,
2021-05-20T22:36:28.2524596Z request:
2021-05-20T22:36:28.2525799Z e {
2021-05-20T22:36:28.2527988Z streamResponseBody: false,
2021-05-20T22:36:28.2529129Z url:
2021-05-20T22:36:28.2531394Z 'https://management.azure.com/subscriptions/[REDACTED]/resourcegroups/[REDACTED]/providers/Microsoft.Resources/deployments/Dtlgr0yny9un?api-version=2020-06-01',
2021-05-20T22:36:28.2532827Z method: 'PUT',
2021-05-20T22:36:28.2534703Z headers: e { _headersMap: [Object] },
2021-05-20T22:36:28.2535725Z body:
2021-05-20T22:36:28.2607056Z '{"properties":{"template":{"$schema":"https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json","contentVersion":"1.0.0.0","parameters":{"newVMName":{"type":"string","defaultValue":"formula1"},"labName":{"type":"string","defaultValue":"devtest"},"size":{"type":"string","defaultValue":"Standard_DS2_v2"},"userName":{"type":"string","defaultValue":"adm0n"},"password":{"type":"securestring","defaultValue":"[[[VmPassword]]"},"Azure_Pipelines_Deployment_Group_Agent_accountUrl":{"type":"string","defaultValue":"[REDACTED]"},"Azure_Pipelines_Deployment_Group_Agent_projectName":{"type":"string","defaultValue":"[REDACTED]"},"Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName":{"type":"string","defaultValue":"dg"},"Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken":{"type":"securestring","defaultValue":"[[[PAT]]"},"Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags":{"type":"string","defaultValue":"WEB, DB"},"Azure_Pipelines_Deployment_Group_Agent_agentInstallPath":{"type":"string","defaultValue":""},"Azure_Pipelines_Deployment_Group_Agent_agentName":{"type":"string","defaultValue":""},"Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon":{"type":"bool","defaultValue":false},"Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount":{"type":"string","defaultValue":"NT AUTHORITY\\\\NetworkService"},"Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword":{"type":"securestring"}},"variables":{"labSubnetName":"[concat(variables(\'labVirtualNetworkName\'), \'Subnet\')]","labVirtualNetworkId":"[resourceId(\'Microsoft.DevTestLab/labs/virtualnetworks\', parameters(\'labName\'), variables(\'labVirtualNetworkName\'))]","labVirtualNetworkName":"[concat(\'Dtl\', parameters(\'labName\'))]","vmId":"[resourceId (\'Microsoft.DevTestLab/labs/virtualmachines\', parameters(\'labName\'), parameters(\'newVMName\'))]","vmName":"[concat(parameters(\'labName\'), \'/\', parameters(\'newVMName\'))]"},"resources":[{"apiVersion":"2018-10-15-preview","type":"Microsoft.DevTestLab/labs/virtualmachines","name":"[variables(\'vmName\')]","location":"[resourceGroup().location]","properties":{"labVirtualNetworkId":"[variables(\'labVirtualNetworkId\')]","notes":"s001ci","customImageId":"/subscriptions/[REDACTED]/resourcegroups/[REDACTED]/providers/microsoft.devtestlab/labs/[REDACTED]/customimages/s001ci","size":"[parameters(\'size\')]","userName":"[parameters(\'userName\')]","password":"[parameters(\'password\')]","isAuthenticationWithSshKey":false,"artifacts":[{"artifactId":"[resourceId(\'Microsoft.DevTestLab/labs/artifactSources/artifacts\', parameters(\'labName\'), \'public repo\', \'windows-wsl\')]"},{"artifactId":"[resourceId(\'Microsoft.DevTestLab/labs/artifactSources/artifacts\', parameters(\'labName\'), \'public repo\', \'windows-deploymentgroup\')]","parameters":[{"name":"accountUrl","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_accountUrl\')]"},{"name":"projectName","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_projectName\')]"},{"name":"deploymentGroupName","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName\')]"},{"name":"PersonalAccessToken","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken\')]"},{"name":"deploymentAgentTags","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags\')]"},{"name":"agentInstallPath","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_agentInstallPath\')]"},{"name":"agentName","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_agentName\')]"},{"name":"RunAsAutoLogon","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon\')]"},{"name":"windowsLogonAccount","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount\')]"},{"name":"windowsLogonPassword","value":"[parameters(\'Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword\')]"}]}],"labSubnetName":"[variables(\'labSubnetName\')]","disallowPublicIpAddress":false,"storageType":"Premium","allowClaim":false}}],"outputs":{"labVMId":{"type":"string","value":"[variables(\'vmId\')]"}}},"parameters":{"Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword":{"value":""},"Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount":{"value":"NT AUTHORITY\\\\NetworkService"},"Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon":{"value":"false"},"Azure_Pipelines_Deployment_Group_Agent_agentName":{"value":""},"Azure_Pipelines_Deployment_Group_Agent_agentInstallPath":{"value":""},"Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags":{"value":"WEB, DB"},"Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken":{"value":"[[[PAT]]"},"Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName":{"value":"dg"},"Azure_Pipelines_Deployment_Group_Agent_projectName":{"value":"[REDACTED]"},"Azure_Pipelines_Deployment_Group_Agent_accountUrl":{"value":"[REDACTED]"},"password":{"value":"[[[VmPassword]]"},"userName":{"value":"adm0n"},"size":{"value":"Standard_DS2_v2"},"labName":{"value":"[REDACTED]"},"newVMName":{"value":"test"},"undefined":{"value":"undefined"}},"mode":"Incremental"}}',
2021-05-20T22:36:28.2620142Z query: undefined,
2021-05-20T22:36:28.2632268Z formData: undefined,
2021-05-20T22:36:28.2633399Z withCredentials: false,
2021-05-20T22:36:28.2770530Z abortSignal: undefined,
2021-05-20T22:36:28.2771192Z timeout: 0,
2021-05-20T22:36:28.2771812Z onUploadProgress: undefined,
2021-05-20T22:36:28.2772489Z onDownloadProgress: undefined,
2021-05-20T22:36:28.2773082Z proxySettings: undefined,
2021-05-20T22:36:28.2773649Z keepAlive: undefined,
2021-05-20T22:36:28.2774615Z agentSettings: undefined,
2021-05-20T22:36:28.2775085Z operationSpec:
2021-05-20T22:36:28.2775554Z { httpMethod: 'PUT',
2021-05-20T22:36:28.2775911Z path:
2021-05-20T22:36:28.2776405Z 'subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/Microsoft.Resources/deployments/{deploymentName}',
2021-05-20T22:36:28.2777061Z urlParameters: [Array],
2021-05-20T22:36:28.2777417Z queryParameters: [Array],
2021-05-20T22:36:28.2777764Z headerParameters: [Array],
2021-05-20T22:36:28.2778118Z requestBody: [Object],
2021-05-20T22:36:28.2778555Z responses: [Object],
2021-05-20T22:36:28.2778883Z serializer: [e] } },
2021-05-20T22:36:28.2779259Z response:
2021-05-20T22:36:28.2779540Z { body:
2021-05-20T22:36:28.2782117Z '{"error":{"code":"InvalidTemplate","message":"Deployment template validation failed: \'The template parameters \'undefined\' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are \'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword\'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.\'.","additionalInfo":[{"type":"TemplateViolation","info":{"lineNumber":0,"linePosition":0,"path":""}}]}}',
2021-05-20T22:36:28.2785005Z headers: e { _headersMap: [Object] },
2021-05-20T22:36:28.2785368Z status: 400 },
2021-05-20T22:36:28.2785656Z body:
2021-05-20T22:36:28.2785938Z { code: 'InvalidTemplate',
2021-05-20T22:36:28.2786247Z message:
2021-05-20T22:36:28.2788320Z 'Deployment template validation failed: \'The template parameters \'undefined\' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are \'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword\'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.\'.',
2021-05-20T22:36:28.2790528Z additionalInfo: { '0': [Object] } } }
2021-05-20T22:36:28.2792240Z ##[debug]task result: Failed
2021-05-20T22:36:28.2825056Z ##[error]Error => code: 'InvalidTemplate'; message = 'Deployment template validation failed: 'The template parameters 'undefined' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are 'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.'.'
2021-05-20T22:36:28.2838760Z ##[debug]Processed: ##vso[task.issue type=error;]Error => code: 'InvalidTemplate'; message = 'Deployment template validation failed: 'The template parameters 'undefined' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are 'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.'.'
2021-05-20T22:36:28.2850830Z ##[debug]Processed: ##vso[task.complete result=Failed;]Error => code: 'InvalidTemplate'; message = 'Deployment template validation failed: 'The template parameters 'undefined' in the parameters file are not valid; they are not present in the original template and can therefore not be provided at deployment time. The only supported parameters for this template are 'newVMName, labName, size, userName, password, Azure_Pipelines_Deployment_Group_Agent_accountUrl, Azure_Pipelines_Deployment_Group_Agent_projectName, Azure_Pipelines_Deployment_Group_Agent_deploymentGroupName, Azure_Pipelines_Deployment_Group_Agent_PersonalAccessToken, Azure_Pipelines_Deployment_Group_Agent_deploymentAgentTags, Azure_Pipelines_Deployment_Group_Agent_agentInstallPath, Azure_Pipelines_Deployment_Group_Agent_agentName, Azure_Pipelines_Deployment_Group_Agent_RunAsAutoLogon, Azure_Pipelines_Deployment_Group_Agent_windowsLogonAccount, Azure_Pipelines_Deployment_Group_Agent_windowsLogonPassword'. Please see https://aka.ms/arm-deploy/#parameter-file for usage details.'.'
2021-05-20T22:36:28.2862394Z ##[section]Finishing: Create Azure DevTest Labs VM
```

The ARM Template from powershell works flawless

As you can see, the task adds undefined parameter.
```json
,"labName":{"value":"[REDACTED]"},"newVMName":{"value":"test"},"undefined":{"value":"undefined"}},"mode":"Incremental"}}',
```