Return different error code for requested jobid=0

src/slurmctld/job_mgr.c

@@ -2457,7 +2457,7 @@ static int _validate_job_desc(job_desc_msg_t * job_desc_msg, int allocate,
 		}
 		if (job_desc_msg->job_id == 0) {
 			info("attempt by uid %u to set zero job_id", submit_uid);
-			return ESLURM_DUPLICATE_JOB_ID;
+			return ESLURM_INVALID_JOB_ID;
 		}
 		dup_job_ptr = find_job_record((uint32_t) job_desc_msg->job_id);
 		if (dup_job_ptr &&