That message would not apply to any job, just ones with either more than 99 pages, or when you try to copy something that legally can't be, Like a Bank note, cash or some specific legal documents, almost all will have the EURion constellation on them. Typically you would be getting the 062-790 code as well as that message if you are attempting to copy something that would be considered counterfeiting.
If you literally cannot copy anything, and a simple reboot hasn't fixed it, I would assume you would need a technician on site because that fault is job specific, possibly they are coded to only allow so many attempts and the machine will lock itself, but I haven't come across a printer that does that. Usually a reboot is enough to get functionality back.
This is starting to get ridiculous. I've had nothing but problems with this printer. Now it wont allow us to copy anything. We keep getting Copy Limit Error. I need this fixed ASAP because it's our office printer, and we need to copy legal documents. How do I fix this!?