This error is caused by the process scheduler (PSUNX) not being able to execute the “lp” program. Typically it is located in the /usr/bin directory. The easiest solution is to simply add this path to the addtopath variable in the process scheduler configuration setup. Typically the cblbin is already there so to append another path simply add it with a “:” colon separator.

AddToPath=/usr/bin:%PS_HOME%/cblbin

Another helpful tip is to make sure the print queues are setup which can be done by entering:

lpstat -t