We have a related issue with "Free Print", that I am curious if anyone else has been able to fix. This mostly happens when someone tries to use MyPrintCenter to release a job.
The printer isn't able to release the job, and the user receives a "free print" error message. This error message doesn't make any sense because the user will never be able to release the print job.
It seems like disabling "Free Printing" and giving a more meaningful error message would be the best approach, but we have not figure out the best Pharos configuration to achieve this.