The LCM compatible messages that have been left undocumented are intended solely for internal use, and as a result, they do not have much practical application for general use. All of the useful information that can be gleaned from those internal messages is already included in the channels that have been documented, so it is our belief that including the internal messages in our documentation will only lead to unnecessary confusion. Instead of taking that approach, it would likely be more beneficial to specify what errors you are seeing so we can address the problem directly.