• Queue does not exist.
• Walltime is larger than the walltime limit of the given queue.
• Backlog size is larger than the max. queue limit of the given queue.
• Workers per allocation is larger than the max. number of workers of the given queue.

For PBS, you can find this with qstat -Q <queue> -f -F json. For Slurm, you can find it with sinfo -O <...> -p <queue>