OI-10
Operational Bucket Child Growth Trend
Operational Issues
Default severity: medium
Product BacklogProcessMetrics
What it detects
Month-over-month child creation under an operational bucket parent shows a positive and increasing slope — the catch-all bucket is growing structurally, not stabilizing. This precedes runaway WIP inflation and permanent metric distortion.
Detection formula
IF issue flagged by OI-01: window_months = config.oi.child_growth_trend_window_months // default: 6 monthly_counts = bucket child creations by month for last window_months monthly_slope = LINEAR_REGRESSION_SLOPE(monthly_counts) IF monthly_slope >= config.oi.child_growth_min_monthly_slope // default: 1 child/month THEN FLAG child_growth_trend IF monthly_slope >= min_slope * 2 THEN CRITICAL Report: monthly_slope, window_months, monthly_counts seriesExamples in practice
- A team shows month-over-month child creation under an operational bucket parent shows a positive and increasing slope while child growth trend window months is set to 6 monthly_counts = bucket child creations by month.
- Example signal: Month-over-month child creation under an operational bucket parent shows a positive and increasing slope — the catch-all bucket is growing structurally, not stabilizing.
Suggested response
Separate operational trackers from product flow or exclude them consistently from delivery metrics.
Coaching playbook
Symptom
Month-over-month child creation under an operational bucket parent shows a positive and increasing slope — the catch-all bucket is growing structurally, not stabilizing. This precedes runaway WIP inflation and permanent metric distortion.
Why it matters
When "Operational Bucket Child Growth Trend" keeps appearing, the team is signalling a repeatable process gap. Left unexamined, the pattern hides where work really stalls and makes improvement metrics harder to trust.
What you can achieve
Separate operational trackers from product flow or exclude them consistently from delivery metrics.
Facilitation questions
- What system change would stop "Operational Bucket Child Growth Trend" from firing again?
- What do the cited issues have in common — same root cause or same workaround?
- Who owns the two-week experiment and how will we verify on the next import?
Run this rule against your own tracker data with Flow Analyzer.