M Code greater than 199 Alert?

Hi All

Ive started getting an alert on some of my toolpaths that says:

“M code greater than 199: M999”

and I was wondering what this meant, couldnt find it on the pocket nc site under error codes. I haven’t changed anything about my CAM post process set up (Fusion 360) as far as I know. Im quite a ways into a part and dont want to continue and risk ruining it until I understand this alert message.

Thanks in advance, Cal

Hi Cal,
I have the same problem with Fusion 360.I guess something wrong with Fusion 360 Post Processors.
You can delete the line, which has M999, from G-code. Then you can run process.