Merge pull request #103654 from dlepow/acrfix

[ACR] Tasks MSI principal

Author: PRMerger16

articles/container-registry/container-registry-tasks-authentication-managed-identity.md

@@ -87,12 +87,12 @@ Depending on the requirements of your task, grant the identity permissions to ac
 
 Use the [Azure CLI](../role-based-access-control/role-assignments-cli.md) or other Azure tools to manage role-based access to resources. For example, run the [az role assignment create][az-role-assignment-create] command to assign the identity a role to the resource. 
 
-The following example assigns a managed identity the permissions to pull from a container registry. The command specifies the *service principal ID* of the identity and the *resource ID* of the target registry.
+The following example assigns a managed identity the permissions to pull from a container registry. The command specifies the *principal ID* of the task identity and the *resource ID* of the target registry.
 
 
 ```azurecli
 az role assignment create \
-  --assignee <servicePrincipalID> \
+  --assignee <principalID> \
   --scope <registryID> \
   --role acrpull
 ```

includes/container-registry-tasks-system-id-properties.md

@@ -10,7 +10,7 @@ ms.date: 07/12/2019
 ms.author: danlep
 ms.custom: include file
 ---
-In the command output, the `identity` section shows an identity of type `SystemAssigned` is set in the task. The `principalId` is the service principal ID of the identity:
+In the command output, the `identity` section shows an identity of type `SystemAssigned` is set in the task. The `principalId` is the principal ID of the task identity:
 
 ```console
 [...]

includes/container-registry-tasks-user-assigned-id.md

@@ -18,13 +18,13 @@ Create an identity named *myACRTasksId* in your subscription using the [az ident
 az identity create --resource-group myResourceGroup --name myACRTasksId
 ```
 
-To configure the user-assigned identity in the following steps, use the [az identity show][az-identity-show] command to store the identity's resource ID, service principal ID, and client ID in variables.
+To configure the user-assigned identity in the following steps, use the [az identity show][az-identity-show] command to store the identity's resource ID, principal ID, and client ID in variables.
 
 ```azurecli
 # Get resource ID of the user-assigned identity
 resourceID=$(az identity show --resource-group myResourceGroup --name myACRTasksId --query id --output tsv)
 
-# Get service principal ID of the user-assigned identity
+# Get principal ID of the task's user-assigned identity
 principalID=$(az identity show --resource-group myResourceGroup --name myACRTasksId --query principalId --output tsv)
 
 # Get client ID of the user-assigned identity