# Limitations

Source: [https://docs.qualcomm.com/doc/80-41102-1/topic/limitations.html](https://docs.qualcomm.com/doc/80-41102-1/topic/limitations.html)

## API limitation

- Transfer fd (file descriptor) between the client and server is only used for
                        IPC, thus the APIs that contain the fd as a parameter are not supported
                        through TelAF RPC.
- Local system resource path, like file path, directory path etc., cannot be
                        shared for remote systems, thus the APIs that contain those paths are not
                        supported through TelAF RPC.

## Banned services

The following services are not allowed to declare as RPC services:

| Service name | Service user |
| --- | --- |
| wdog | root |
| updateDaemonWdog | root |
| taf\_someipSvr | telaf |
| taf\_someipClnt | telaf |
| taf\_ks | telaf |
| taf\_fsc | telaf |
| supervisorWdog | root |
| sdirTool | root |
| logFd | root |
| logDaemonWdog | root |
| LogControl | root |
| LogClient | root |
| le\_wdog | root |
| le\_updateCtrl | root |
| le\_update | root |
| le\_kernelModule | root |
| le\_instStat | root |
| le\_ima | root |
| le\_framework | root |
| le\_cfgAdmin | root |
| le\_cfg | root |
| le\_appRemove | root |
| le\_appProc | root |
| le\_appInfo | root |
| le\_appCtrl | root |
| DeviceManagerTool | root |
| DeviceManager | root |
| configTreeWdog | root |

**Parent Topic:** [TelAF RPC](https://docs.qualcomm.com/doc/80-41102-1/topic/rpc.html)

Last Published: May 12, 2026

[Previous Topic
Build RPC test systems and run the test application](https://docs.qualcomm.com/bundle/publicresource/80-41102-1/topics/build-rpc-test-systems-and-run-the-test-application.md) [Next Topic
TelAF diagnostic](https://docs.qualcomm.com/bundle/publicresource/80-41102-1/topics/telaf_diagnostic.md)