update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/device-dev/subsystems/subsys-build-FAQ.md

@@ -66,8 +66,12 @@
      which riscv32-unknown-elf-gcc 
      ```
 
+     
+  
   2. Run the **chmod** command to change the directory permission to **755**.
   
+     
+
 ### "No module named 'Crypto'" Displayed During the Build Process
 
 - **Symptom**
@@ -76,7 +80,7 @@
 
 - **Possible Causes**
 
-  Crypto is not installed in Python 3.
+   Crypto is not installed in Python3.
 
 - **Solution**
 
@@ -110,3 +114,20 @@
   ```
 
 
+### "some services are not authenticated. Listed as follows" Displayed During the Build Process
+
+- **Symptom**
+
+  The build fails, and "some services are not authenticated. Listed as follows" is displayed.
+
+- **Possible Causes**
+
+  For the processes listed in the error information, the UID is set to **root** or **system** in the process configuration files. However, these processes are not high-privilege processes defined by the product.
+
+- **Solution**
+
+  Modify the process configuration file to reduce the privilege level. Do not set **UID** to **root** or **system** unless necessary.
+
+  If a process must have the **root** or **system** privilege due to service requirements, modify the **high_privilege_process_list.json** file with the approval of security experts. The **high_privilege_process_list.json** file is located in **vendor/**{*company_name*}/{*product_name*}**/security_config**. For example, the file for rk3586 is **//vendor/hihope/rk3568/security_config/high_privilege_process_list.json**.
+
+