> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/ethernet-rov-locator/communicating-with-the-rovl/messages-from-rovl-to-host/usduserr-error-message.md).

# $USERR Error Message

Example: 

`$USERR,Bad baud rate attempted, legal values 115200 or 921600*15`

Format: $USERR,\<message>\*hh

\<message> is free-form text that does not include any asterisks or newlines

All $USERR messages can be safely ignored.