1e41f4b71Sopenharmony_ci# HiCollie Error Codes 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci> **Note:** 4e41f4b71Sopenharmony_ci> 5e41f4b71Sopenharmony_ci> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ci## 29800001 Failed to Obtain the System Service 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Error Message** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciWrong thread context.The function can not be called from main thread. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Description** 14e41f4b71Sopenharmony_ciThe API fails to be called from the thread. 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci**Possible Causes** 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ciThe API cannot be called from the main thread. 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci**Solution** 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ciCall the API from a non-main thread. 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci## 29800002 Failed to Call the Remote API 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci**Error Message** 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ciRemote call failed. 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci**Description** 31e41f4b71Sopenharmony_ciThe API fails to be called for the remote service. 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci**Possible Causes** 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ciThe service is not started or crashes. 36