# Application Development
- Test urlpath<!--test-urlpath-->
  - urlpath Normal<!--urlpath-normal-->
    - errorCode-1<!--errorcode-full-->
      - [Media Error Codes](onlyfortest/reference/apis-media-kit/errorcode-media.md)  
    - errorCode-2<!--errorcode-universal-->
      - [Universal Error Codes](onlyfortest/reference/errorcode-universal.md)
  - Parent node urlpath illegal<!--urlpath-illegal-->
    - errorCode-3<!--errorcode-for-ads-for-enterprise-device-management-level3-parent-node-->
      - errorCode-4<!--errorcode-for-ads-for-enterprise-device-management-->
        - [Enterprise Device Management Error Codes](onlyfortest/reference/apis-mdm-kit/errorcode-enterpriseDeviceManager.md) 
  - Parent-node-urlpath-null<!--urlpath-null-->
    - errorCode-5<!--level2-parent-node-errorcode-for-ads-->
      - errorCode-6<!--errorcode-for-ads-->
        - [Ads Service Framework Error Codes](onlyfortest/reference/apis-ads-kit/errorcode-ads.md)