Merge pull request #25776 from microsoftgraph/u/roparash/NoteInM365BackupProtectionUnit

Add Notes in M365 backup API documentation

Author: FaithOmbongi

api-reference/v1.0/api/backuprestoreroot-list-driveprotectionunits.md

@@ -50,6 +50,10 @@ If successful, this method returns a `200 OK` response code and a collection of
 
 For a list of possible error responses, see [Backup Storage API error responses](/graph/backup-storage-error-codes).
 
+> [!NOTE]
+> The `displayName` and `email` properties are only available for the `Delegated` permission type.
+>
+
 ## Examples
 
 ### Example 1: List all the driveProtectionUnits in a tenant

api-reference/v1.0/api/backuprestoreroot-list-mailboxprotectionunits.md

@@ -51,6 +51,10 @@ If successful, this method returns a `200 OK` response code and a [mailboxProtec
 
 For a list of possible error responses, see [Backup Storage API error responses](/graph/backup-storage-error-codes).
 
+> [!NOTE]
+> The `displayName` and `email` properties are only available for the `Delegated` permission type.
+>
+
 ## Examples
 
 ### Example 1: List all mailboxProtectionUnits in a tenant

api-reference/v1.0/api/backuprestoreroot-list-siteprotectionunits.md

@@ -51,6 +51,10 @@ If successful, this method returns a `200 OK` response code and a [siteProtectio
 
 For a list of possible error responses, see [Backup Storage API error responses](/graph/backup-storage-error-codes).
 
+> [!NOTE]
+> The `siteName` and `siteWebUrl` properties are only available for the `Delegated` permission type.
+>
+
 ## Examples
 
 ### Example 1: List all the siteProtectionUnits in a tenant