> For the complete documentation index, see [llms.txt](https://docs.opsmx.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.opsmx.com/opsmx-1/opsmx-context-engine/additional-resources/previous-releases/isd-3.12/data-and-intelligence-module-autopilot/autopilot/log-analysis/cardinality-consideration-of-error-events.md).
# Cardinality consideration of Error Events
### **Cardinality considerations for Error events**
When v2 occurrence in a new release is substantially more than Baseline then the error is considered critical and will cause failure of analysis.
Ratio = (v2 occurrences) / (v1 occurrences)
If the topic of cluster is **ERROR** or **CRITICAL ERROR**
IGNORE if ratio <2
ERROR if ratio >=2
CRITICAL ERROR if ratio >=3
If the topic of cluster is **WARN**
IGNORE if ratio <2
WARN if ratio >=2
These kinds of events will be differentiated from that of the regular unexpected event with a special icon as upward arrow.
---
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