# UI Appearance Error Codes > **NOTE** > > This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). ## 500001 Internal Error **Error Message** Internal error. **Error Description** This error code is reported when an internal error that cannot be rectified by developers occurs, for example, a parameter persistence error, a failure to obtain services, or a failure to configure the color mode. **Possible Cause** An internal error that cannot be rectified by developers occurs, for example, a parameter persistence error, a failure to obtain services, or a failure to configure the color mode. **Solution** N/A