diff --git a/docs.it4i/general/slurm-job-submission-and-execution.md b/docs.it4i/general/slurm-job-submission-and-execution.md
index aac479e7b419942adac07cfd444be626c35042b1..55396b204fe1b4916f490dae7117a34f5b95daf4 100644
--- a/docs.it4i/general/slurm-job-submission-and-execution.md
+++ b/docs.it4i/general/slurm-job-submission-and-execution.md
@@ -1,5 +1,8 @@
 # Job Submission and Execution
 
+!!! Important
+    Slurm scheduler is currently in use on Complementary System only.
+
 ## Slurm Introduction
 
 [Slurm][a] is a workload manager which facilitates access to cluster resources, and manages scheduling, starting, and executing jobs, and job monitoring. We highly encourage you have a look at the [interactive Slurm tutorial][b].