From 2023-01-18 ECMWF will enforce killing jobs if they have reached their wall time if "#SBATCH --time=" or command line option "-–time=" was provided with the job.
Alternatively ECMWF accepts jobs without "#SBATCH --time=" or "-–time=" and ECMWF will instead use average runtime of previous "similar" jobs by generating job tag based on user, job name, job geometry and job output path.
For more detail please refer to HPC2020: Job Runtime Management