Hi @ndahatonde2
Refer KB: KB2821288 CMDB Health Dashboard — Compliance Score KPI: What Runs, How It Works, How CIs Are Evaluat...
The most common reasons Compliance score is 0 or a class is missing
This is where most customer confusion happens. Here are the exact reasons from the code, in order of how often they occur:
→ Audit has never run — last_run_date on cert_audit is empty. The processor silently skips the audit and marks it as complete with a skipped flag. No error is surfaced. No failure is written. The audit simply does not contribute to the score.
→ Scripted audit not calling updateLastRunDate — for scripted audits, last_run_date is never updated automatically. The script must explicitly call new SNC.CertificationProcessing().updateLastRunDate(auditId) at the very start of the script before any results are persisted. If this call is missing, last_run_date stays empty forever and the health job skips the audit on every single health run — no matter how many times the audit itself has executed.
→ Audit running when the health job fires — the engine falls back to the previous completed run window using prev_last_run_date. If the audit has only ever completed one run, prev_last_run_date is also empty and the audit is skipped again.
→ Audit targets the wrong table — if cert_audit.table is not cmdb_ci or one of its subclasses, the health job never sees it.
→ Audit ran but produced no Failed results — last_run_date is populated but cert_audit_result has no Failed rows in the window. Either all CIs passed or the audit conditions did not match anything.
→ Audit is inactive — excluded from the batch query entirely.
Check following Similar post as well:
CMDB Health Dashboard, under compliance shows " No Data Job Completed, however there were no CIs"
CMDB Health Dashboard, under compliance shows " No Data Job Completed, however there were no CIs"
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Regards
Tanushree Maiti
ServiceNow Technical Architect
LinkedIn: https://www.linkedin.com/in/tanushreemaiti
