diff --git a/build/yaml/botbuilder-dotnet-ci-facebook-test.yml b/build/yaml/botbuilder-dotnet-ci-facebook-test.yml
index 77d8bfe9af..e36d693c79 100644
--- a/build/yaml/botbuilder-dotnet-ci-facebook-test.yml
+++ b/build/yaml/botbuilder-dotnet-ci-facebook-test.yml
@@ -44,13 +44,43 @@ variables:
 #  FacebookTestBotBotName: define this in Azure
 #  FacebookTestBotFacebookAccessToken: define this in Azure
 #  FacebookTestBotFacebookAppSecret: define this in Azure
-#  FacebookTestBotFacebookVerifyToken: define this in Azure
+#  FacebookTestBotFacebookVerifyToken: (optional) define this in Azure. Useful for webhook testing for un-deleted resources post-execution.
 #  FacebookTestBotSenderId: define this in Azure?: This var not needed in build 156862. Revisit this after the build's test is fixed & running.
 
 steps:
 - powershell: 'gci env:* | sort-object name | Format-Table -AutoSize -Wrap'
   displayName: 'Display env vars'
 
+- powershell: |
+    $InvalidVariables = $FALSE
+    $Message = "Required variable 'REPLACE_VARIABLE' either null, empty or whitespaced. Please set up this variable in the pipeline configuration."
+
+    if(!"$env:FacebookTestBotAppId".Trim())               {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotAppId")}
+    if(!"$env:FacebookTestBotAppSecret".Trim())           {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotAppSecret")}
+    if(!"$env:AzureSubscription".Trim())                  {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "AzureSubscription")}
+    if(!"$env:FacebookTestBotBotGroup".Trim())            {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotBotGroup")}
+    if(!"$env:FacebookTestBotBotName".Trim())             {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotBotName")}
+    if(!"$env:FacebookTestBotFacebookAccessToken".Trim()) {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotFacebookAccessToken")}
+    if(!"$env:FacebookTestBotFacebookAppSecret".Trim())   {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotFacebookAppSecret")}
+    if(!"$env:FacebookTestBotSenderId".Trim())            {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "FacebookTestBotSenderId")}
+    
+    if($InvalidVariables){
+      Write-Host "##vso[task.setvariable variable=InvalidVariables;]true"
+      Write-Host "##vso[task.complete result=Failed;]DONE"
+    }
+  displayName: Validate variables
+
+- powershell: |
+   # Set values in appsettings.json file.
+   $file = "$(Build.SourcesDirectory)\tests\Adapters\Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot\appsettings.json";
+   
+   $content = Get-Content -Raw $file | ConvertFrom-Json;
+   $content.FacebookVerifyToken = "$(FacebookTestBotFacebookVerifyToken)";
+   $content.FacebookAppSecret = "$(FacebookTestBotFaceBookAppSecret)";
+   $content.FacebookAccessToken = "$(FacebookTestBotFacebookAccessToken)";
+   $content | ConvertTo-Json | Set-Content $file;
+  displayName: 'Set values in appsettings.json file.'
+
 - task: DotNetCoreCLI@2
   displayName: 'dotnet publish testbot'
   inputs:
@@ -101,7 +131,7 @@ steps:
     azureSubscription: '$(AzureSubscription)'
     scriptLocation: inlineScript
     inlineScript: 'call az group delete -n "$(BotGroup)" --yes'
-  condition: and(always(), ne(variables['DeleteResourceGroup'], 'false'))
+  condition: and(always(), ne(variables['DeleteResourceGroup'], 'false'), ne(variables.InvalidVariables, 'true'))
 
 - script: |
    cd ..
diff --git a/build/yaml/botbuilder-dotnet-ci-webex-test.yml b/build/yaml/botbuilder-dotnet-ci-webex-test.yml
index 26491f853a..af46afe305 100644
--- a/build/yaml/botbuilder-dotnet-ci-webex-test.yml
+++ b/build/yaml/botbuilder-dotnet-ci-webex-test.yml
@@ -56,6 +56,28 @@ steps:
 - powershell: 'gci env:* | sort-object name | Format-Table -AutoSize -Wrap'
   displayName: 'Display env vars'
 
+- powershell: |
+    $InvalidVariables = $FALSE
+    $Message = "Required variable 'REPLACE_VARIABLE' either null, empty or whitespaced. Please set up this variable in the pipeline configuration."
+
+    if(!"$env:WebexTestBotAppSecret".Trim())                     {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotAppSecret")}
+    if(!"$env:WebexTestBotBotGroup".Trim())                      {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotBotGroup")}
+    if(!"$env:WebexTestBotBotName".Trim())                       {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotBotName")}
+    if(!"$env:WebexTestBotRefreshToken".Trim())                  {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotRefreshToken")}
+    if(!"$env:WebexTestBotWebexBotAccessToken".Trim())           {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexBotAccessToken")}
+    if(!"$env:WebexTestBotWebexBotUserName".Trim())              {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexBotUserName")}
+    if(!"$env:WebexTestBotWebexIntegrationClientId".Trim())      {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexIntegrationClientId")}
+    if(!"$env:WebexTestBotWebexIntegrationClientSecret".Trim())  {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexIntegrationClientSecret")}
+    if(!"$env:WebexTestBotWebexRoomId".Trim())                   {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexRoomId")}
+    if(!"$env:WebexTestBotWebexWebhookName".Trim())              {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexWebhookName")}
+    if(!"$env:WebexTestBotWebexWebhookSecret".Trim())            {$InvalidVariables = $TRUE; Write-Host $Message.replace("REPLACE_VARIABLE", "WebexTestBotWebexWebhookSecret")}
+
+    if($InvalidVariables){
+      Write-Host "##vso[task.setvariable variable=InvalidVariables;]true"
+      Write-Host "##vso[task.complete result=Failed;]DONE"
+    }
+  displayName: Validate variables
+
 - task: DotNetCoreCLI@2
   displayName: 'dotnet publish'
   inputs:
@@ -107,7 +129,7 @@ steps:
     azureSubscription: '$(AzureSubscription)'
     scriptLocation: inlineScript
     inlineScript: 'call az group delete -n "$(BotGroup)" --yes'
-  condition: and(always(), ne(variables['DeleteResourceGroup'], 'false'))
+  condition: and(always(), ne(variables['DeleteResourceGroup'], 'false'), ne(variables.InvalidVariables, 'true'))
 
 - script: |
    cd ..