diff --git a/src/Functions/README.md b/src/Functions/README.md
index c299ced7c63f..ce01fb4e2d9d 100644
--- a/src/Functions/README.md
+++ b/src/Functions/README.md
@@ -65,7 +65,7 @@ directive:
 ```
 
 ``` yaml
-branch: powershell-function
+branch: main
 require:
   - $(this-folder)/../readme.azure.noprofile.md
 input-file:
diff --git a/src/Functions/custom/HelperFunctions.ps1 b/src/Functions/custom/HelperFunctions.ps1
index 62d9deb71562..3b1b93179f62 100644
--- a/src/Functions/custom/HelperFunctions.ps1
+++ b/src/Functions/custom/HelperFunctions.ps1
@@ -42,6 +42,8 @@ $constants["FunctionsNoV2Version"] = @(
     "USSec East"
 )
 
+$constants["SetDefaultValueParameterWarningMessage"] = "This default value is subject to change over time. Please set this value explicitly to ensure the behavior is not accidentally impacted by future changes."
+
 foreach ($variableName in $constants.Keys)
 {
     if (-not (Get-Variable $variableName -ErrorAction SilentlyContinue))
@@ -1018,7 +1020,7 @@ function GetRuntimeJsonDefinition
             $RuntimeVersion = $latestVersion.ToString()
         }
 
-        Write-Verbose "RuntimeVersion not specified. Setting default runtime version for '$Runtime' to '$RuntimeVersion'." -Verbose
+        Write-Warning "RuntimeVersion not specified. Setting default value to '$RuntimeVersion'. $SetDefaultValueParameterWarningMessage"
     }
 
     # Get the RuntimeJsonDefinition
diff --git a/src/Functions/custom/New-AzFunctionApp.ps1 b/src/Functions/custom/New-AzFunctionApp.ps1
index 77378f3e8f40..12b41b93e1b8 100644
--- a/src/Functions/custom/New-AzFunctionApp.ps1
+++ b/src/Functions/custom/New-AzFunctionApp.ps1
@@ -266,7 +266,7 @@ function New-AzFunctionApp {
                 }
 
                 $FunctionsVersion = $DefaultFunctionsVersion
-                Write-Verbose "FunctionsVersion not specified. Setting default FunctionsVersion to '$FunctionsVersion'." -Verbose
+                Write-Warning "FunctionsVersion not specified. Setting default value to '$FunctionsVersion'. $SetDefaultValueParameterWarningMessage"
             }
 
             ValidateFunctionsVersion -FunctionsVersion $FunctionsVersion
@@ -284,7 +284,7 @@ function New-AzFunctionApp {
             if (-not $OSType)
             {
                 $OSType = GetDefaultOSType -Runtime $Runtime
-                Write-Verbose "OSType for $Runtime is '$OSType'." -Verbose
+                Write-Warning "OSType not specified. Setting default value to '$OSType'. $SetDefaultValueParameterWarningMessage"
             }
 
             $runtimeJsonDefintion = GetRuntimeJsonDefinition -FunctionsVersion $FunctionsVersion -Runtime $Runtime -RuntimeVersion $RuntimeVersion -OSType $OSType
diff --git a/src/Functions/test/New-AzFunctionApp.Tests.ps1 b/src/Functions/test/New-AzFunctionApp.Tests.ps1
index 1f7bc50d2ef7..a63cc8302817 100644
--- a/src/Functions/test/New-AzFunctionApp.Tests.ps1
+++ b/src/Functions/test/New-AzFunctionApp.Tests.ps1
@@ -128,11 +128,11 @@ Describe 'New-AzFunctionApp' {
                                               -FunctionsVersion $functionsVersion `
                                               -WhatIf
 
-                        } 4>&1 2>&1 > $filePath
+                        } 3>&1 2>&1 > $filePath
 
                         $logFileContent = Get-Content -Path $filePath -Raw
                         $expectectedRuntimeVersion = $expectedDefaultRuntimeVersion[$OSType][$functionsVersion][$runtime]
-                        $expectedMessage = "RuntimeVersion not specified. Setting default runtime version for '$runtime' to '$expectectedRuntimeVersion'."
+                        $expectedMessage = "RuntimeVersion not specified. Setting default value to '$expectectedRuntimeVersion'."
                         $logFileContent | Should Match $expectedMessage
                     }
                     finally
@@ -234,12 +234,12 @@ Describe 'New-AzFunctionApp' {
                                       -RuntimeVersion $runtimeVersion `
                                       -WhatIf
 
-                } 4>&1 2>&1 > $filePath
+                } 3>&1 2>&1 > $filePath
 
                 $logFileContent = Get-Content -Path $filePath -Raw
 
-                $expectectedFunctionsVersionWarning = "FunctionsVersion not specified. Setting default FunctionsVersion to '$expectedFunctionsVersion'."
-                $expectectedOSTypeWarning = "OSType for $runtime is '$expectedOSType'."
+                $expectectedFunctionsVersionWarning = "FunctionsVersion not specified. Setting default value to '$expectedFunctionsVersion'."
+                $expectectedOSTypeWarning = "OSType not specified. Setting default value to '$expectedOSType'."
 
                 $logFileContent | Should Match $expectectedFunctionsVersionWarning
                 $logFileContent | Should Match $expectectedOSTypeWarning