1# Update Error Codes 2 3> **NOTE** 4> 5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](errorcode-universal.md). 6 7## 11500104 IPC Error 8 9**Error Message** 10 11BusinessError 11500104: IPC error. 12 13**Description** 14 15This error code is reported if an exception is thrown during an IPC call. 16 17**Possible Causes** 18 19An IPC API call failed. 20 21**Solution** 22 231. Check whether the update system ability has started. If not, start it. 242. Check whether IPC data conversion is normal. If not, check the conversion process. 25