I’m trying to find that local directory to overwrite the original without editing it. I tried ~/local/share/check_mk/checks/apc_ats_output without success. The original file is located in /opt/omd/versions/2.2.0p9.cre/share/check_mk/checks/apc_ats_output.
Edit: nevermind, it works, had to go into discovery and rediscover the same service for some reason…