What is the difference between an Error and a Warning?

The 3ds Max FBX Plug-in uses errors and warnings to alert you of conversions and potential problems during the export process.

When something unexpected occurs during the conversion, the plug-in reports an error. An error occurs when the plug-in encounters an unknown behavior and the conversion is going to produce an unexpected result.

When the plug-in must apply a conversion to the source data for it to be in a format that the destination application can read, the plug-in reports a warning. This warning is not the indication of a problem, but is there to provide a report of conversions that the plug-in has applied to the outgoing data.