diff --git a/src/Resources/ResourceManager/Implementation/ResourceGroupDeployments/NewAzureResourceGroupDeploymentCmdlet.cs b/src/Resources/ResourceManager/Implementation/ResourceGroupDeployments/NewAzureResourceGroupDeploymentCmdlet.cs
index 6c0ff02529f4..55ff4f9b4377 100644
--- a/src/Resources/ResourceManager/Implementation/ResourceGroupDeployments/NewAzureResourceGroupDeploymentCmdlet.cs
+++ b/src/Resources/ResourceManager/Implementation/ResourceGroupDeployments/NewAzureResourceGroupDeploymentCmdlet.cs
@@ -78,6 +78,9 @@ public class NewAzureResourceGroupDeploymentCmdlet : DeploymentCreateCmdlet
         [Parameter(Mandatory = false, HelpMessage = "Run cmdlet in the background")]
         public SwitchParameter AsJob { get; set; }
 
+        [Parameter(Mandatory = false, HelpMessage = "Aux tenant ids for cross tenant references in deployments.")]
+        public string[] AuxTenant { get; set; }
+
         protected override ConfirmImpact ConfirmImpact => ((CmdletAttribute)Attribute.GetCustomAttribute(
             typeof(NewAzureResourceGroupDeploymentCmdlet),
             typeof(CmdletAttribute))).ConfirmImpact;
@@ -102,7 +105,8 @@ public class NewAzureResourceGroupDeploymentCmdlet : DeploymentCreateCmdlet
                     Type = RollbackToLastDeployment ? OnErrorDeploymentType.LastSuccessful : OnErrorDeploymentType.SpecificDeployment,
                     DeploymentName = RollbackToLastDeployment ? null : RollBackDeploymentName
                 }
-                : null
+                : null,
+            AuxTenantHeaders = GetAuxiliaryAuthHeaderFromTenantIds(AuxTenant)
         };
 
         protected override PSDeploymentWhatIfCmdletParameters BuildWhatIfParameters() => new PSDeploymentWhatIfCmdletParameters(
@@ -117,7 +121,7 @@ public class NewAzureResourceGroupDeploymentCmdlet : DeploymentCreateCmdlet
             templateParametersUri: this.TemplateParameterUri,
             templateParametersObject: this.GetTemplateParameterObject(),
             resultFormat: this.WhatIfResultFormat,
-            excludeChangeTypes: this.WhatIfExcludeChangeType); 
+            excludeChangeTypes: this.WhatIfExcludeChangeType);
 
         protected override void OnProcessRecord()
         {
diff --git a/src/Resources/ResourceManager/SdkClient/NewResourceManagerSdkClient.cs b/src/Resources/ResourceManager/SdkClient/NewResourceManagerSdkClient.cs
index e22e595ad97a..aa1329cc71ae 100644
--- a/src/Resources/ResourceManager/SdkClient/NewResourceManagerSdkClient.cs
+++ b/src/Resources/ResourceManager/SdkClient/NewResourceManagerSdkClient.cs
@@ -511,7 +511,15 @@ private DeploymentValidateResult ValidateDeployment(PSDeploymentCmdletParameters
                     return ResourceManagementClient.Deployments.ValidateAtManagementGroupScope(parameters.ManagementGroupId, parameters.DeploymentName, scopedDeployment);
 
                 case DeploymentScopeType.ResourceGroup:
-                    return ResourceManagementClient.Deployments.Validate(parameters.ResourceGroupName, parameters.DeploymentName, deployment);
+                    if (parameters.AuxTenantHeaders != null)
+                    {
+                        return ResourceManagementClient.Deployments.ValidateWithHttpMessagesAsync(parameters.ResourceGroupName, parameters.DeploymentName, deployment,
+                            customHeaders: ConvertAuxTenantDictionary(parameters.AuxTenantHeaders)).GetAwaiter().GetResult().Body;
+                    }
+                    else
+                    {
+                        return ResourceManagementClient.Deployments.Validate(parameters.ResourceGroupName, parameters.DeploymentName, deployment);
+                    }
 
                 case DeploymentScopeType.Subscription:
                 default:
@@ -647,7 +655,15 @@ private void BeginDeployment(PSDeploymentCmdletParameters parameters, Deployment
                     break;
 
                 case DeploymentScopeType.ResourceGroup:
-                    ResourceManagementClient.Deployments.BeginCreateOrUpdate(parameters.ResourceGroupName, parameters.DeploymentName, deployment);
+                    if (parameters.AuxTenantHeaders != null)
+                    {
+                        ResourceManagementClient.Deployments.BeginCreateOrUpdateWithHttpMessagesAsync(parameters.ResourceGroupName, parameters.DeploymentName, deployment,
+                            customHeaders: ConvertAuxTenantDictionary(parameters.AuxTenantHeaders)).GetAwaiter().GetResult();
+                    }
+                    else
+                    {
+                        ResourceManagementClient.Deployments.BeginCreateOrUpdate(parameters.ResourceGroupName, parameters.DeploymentName, deployment);
+                    }
                     break;
 
                 case DeploymentScopeType.Subscription:
@@ -656,6 +672,22 @@ private void BeginDeployment(PSDeploymentCmdletParameters parameters, Deployment
                     break;
             }
         }
+        /// <summary>
+        /// Conversion method for aux tenant dictionary to put it in correct format for passing as custom header object in sdk.
+        /// </summary>
+        /// <param name="auxTenants">Dictionary of tenant to tokens.</param>
+        private Dictionary<string, List<string>> ConvertAuxTenantDictionary(IDictionary<string, IList<string>> auxTenants)
+        {
+            if (auxTenants == null) return null;
+
+            var headers = new Dictionary<string, List<string>> ();
+            foreach (KeyValuePair<string, IList<string>> entry in auxTenants)
+            {
+                headers[entry.Key] = entry.Value.ToList();
+            }
+
+            return headers;
+        }
 
         private void RunDeploymentValidation(PSDeploymentCmdletParameters parameters, Deployment deployment)
         {
diff --git a/src/Resources/ResourceManager/SdkModels/Deployments/PSDeploymentCmdletParameters.cs b/src/Resources/ResourceManager/SdkModels/Deployments/PSDeploymentCmdletParameters.cs
index 9029c67cdde5..7a1ecbce0cae 100644
--- a/src/Resources/ResourceManager/SdkModels/Deployments/PSDeploymentCmdletParameters.cs
+++ b/src/Resources/ResourceManager/SdkModels/Deployments/PSDeploymentCmdletParameters.cs
@@ -41,5 +41,7 @@ public class PSDeploymentCmdletParameters
         public string DeploymentDebugLogLevel { get; set; }
 
         public OnErrorDeployment OnErrorDeployment { get; set; }
+
+        public IDictionary<string, IList<string>> AuxTenantHeaders { get; set; }
     }
 }
diff --git a/src/Resources/Resources/ChangeLog.md b/src/Resources/Resources/ChangeLog.md
index 21910100d4c1..1b21b3cb166b 100644
--- a/src/Resources/Resources/ChangeLog.md
+++ b/src/Resources/Resources/ChangeLog.md
@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Added `AuxTenant` parameter in `New-AzResourceGroupDeployment`to support cross-tenant deployment.
 * Supported `-SkipClientSideScopeValidation` in RoleAssignment and RoleDefinition related commands. [#22473]
 * Updated Bicep build logic to use --stdout flag instead of creating a temporary file on disk.
 * Fixed exception when `-ApiVersion` is specified for `Get-AzResource`, affected by some resource types.
diff --git a/src/Resources/Resources/help/New-AzResourceGroupDeployment.md b/src/Resources/Resources/help/New-AzResourceGroupDeployment.md
index ef1250394a49..be4b8a287ff4 100644
--- a/src/Resources/Resources/help/New-AzResourceGroupDeployment.md
+++ b/src/Resources/Resources/help/New-AzResourceGroupDeployment.md
@@ -18,8 +18,9 @@ Adds an Azure deployment to a resource group.
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateFile <String> [-SkipTemplateParameterPrompt]
- [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateFile <String>
+ [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
+ [<CommonParameters>]
 ```
 
 ### ByTemplateObjectAndParameterObject
@@ -27,9 +28,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterObject <Hashtable>
- -TemplateObject <Hashtable> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
- [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>]
+ -TemplateParameterObject <Hashtable> -TemplateObject <Hashtable> [-SkipTemplateParameterPrompt] [-Pre]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateFileAndParameterObject
@@ -37,9 +38,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterObject <Hashtable>
- -TemplateFile <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
- [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>]
+ -TemplateParameterObject <Hashtable> -TemplateFile <String> [-SkipTemplateParameterPrompt] [-Pre]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateUriAndParameterObject
@@ -47,9 +48,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterObject <Hashtable>
- -TemplateUri <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
- [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>]
+ -TemplateParameterObject <Hashtable> -TemplateUri <String> [-SkipTemplateParameterPrompt] [-Pre]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateSpecResourceIdAndParamsObject
@@ -57,9 +58,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterObject <Hashtable>
- -TemplateSpecId <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
- [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>]
+ -TemplateParameterObject <Hashtable> -TemplateSpecId <String> [-SkipTemplateParameterPrompt] [-Pre]
+ [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateObjectAndParameterFile
@@ -67,7 +68,7 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterFile <String>
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterFile <String>
  -TemplateObject <Hashtable> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
  [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
@@ -77,9 +78,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterFile <String> -TemplateFile <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterFile <String>
+ -TemplateFile <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateUriAndParameterFile
@@ -87,9 +88,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterFile <String> -TemplateUri <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterFile <String>
+ -TemplateUri <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateSpecResourceIdAndParams
@@ -97,9 +98,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterFile <String> -TemplateSpecId <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterFile <String>
+ -TemplateSpecId <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByParameterFileWithNoTemplate
@@ -107,7 +108,7 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterFile <String>
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterFile <String>
  [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
  [<CommonParameters>]
 ```
@@ -117,7 +118,7 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterUri <String>
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterUri <String>
  -TemplateObject <Hashtable> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
  [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
@@ -127,9 +128,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterUri <String> -TemplateFile <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterUri <String>
+ -TemplateFile <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateUriAndParameterUri
@@ -137,9 +138,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterUri <String> -TemplateUri <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterUri <String>
+ -TemplateUri <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateSpecResourceIdAndParamsUri
@@ -147,9 +148,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateParameterUri <String> -TemplateSpecId <String>
- [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateParameterUri <String>
+ -TemplateSpecId <String> [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>]
+ [-WhatIf] [-Confirm] [<CommonParameters>]
 ```
 
 ### ByTemplateObjectWithNoParameters
@@ -157,7 +158,7 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateObject <Hashtable>
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateObject <Hashtable>
  [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
  [<CommonParameters>]
 ```
@@ -167,8 +168,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateUri <String> [-SkipTemplateParameterPrompt]
- [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateUri <String>
+ [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
+ [<CommonParameters>]
 ```
 
 ### ByTemplateSpecResourceId
@@ -176,8 +178,9 @@ New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mod
 New-AzResourceGroupDeployment [-Name <String>] -ResourceGroupName <String> [-Mode <DeploymentMode>]
  [-DeploymentDebugLogLevel <String>] [-RollbackToLastDeployment] [-RollBackDeploymentName <String>]
  [-Tag <Hashtable>] [-WhatIfResultFormat <WhatIfResultFormat>] [-WhatIfExcludeChangeType <String[]>] [-Force]
- [-ProceedIfNoChange] [-AsJob] [-QueryString <String>] -TemplateSpecId <String> [-SkipTemplateParameterPrompt]
- [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm] [<CommonParameters>]
+ [-ProceedIfNoChange] [-AsJob] [-AuxTenant <String[]>] [-QueryString <String>] -TemplateSpecId <String>
+ [-SkipTemplateParameterPrompt] [-Pre] [-DefaultProfile <IAzureContextContainer>] [-WhatIf] [-Confirm]
+ [<CommonParameters>]
 ```
 
 ## DESCRIPTION
@@ -264,6 +267,21 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -AuxTenant
+Aux tenant ids for cross tenant deployments
+
+```yaml
+Type: System.String[]
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -DefaultProfile
 The credentials, account, tenant, and subscription used for communication with azure