{"record":{"id":"db12aaeb99b61b9f","repo":"JuliusBrussee/caveman","slug":"where-representative-trace-trace-analysis-uni","errorCode":null,"errorMessage":"${where} representative trace ${trace.analysis_unit_id} is not an analysis unit of this report","messagePattern":"(.+?) representative trace (.+?) is not an analysis unit of this report","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/shared/contracts/scripts/validate-continuous-improvement.mjs","lineNumber":162,"sourceCode":"    const armVariants = new Map();\n    let comparedUnits = 0;\n    for (const arm of item.cohort.arms) {\n      const variant = variantsByID.get(arm.variant_id);\n      if (!variant) throw new Error(`${where} cohort arm ${arm.role} references a workflow variant that is not in this report`);\n      if (variant.task_family_id !== family.id) throw new Error(`${where} cohort arm ${arm.role} uses a variant of another task family`);\n      armVariants.set(arm.role, variant);\n      comparedUnits += arm.unit_count;\n    }\n    const excluded = item.cohort.excluded_units.reduce((total, exclusion) => total + exclusion.unit_count, 0);\n    if (comparedUnits + excluded !== item.cohort.family_unit_count) {\n      throw new Error(`${where} cohort arms (${comparedUnits}) plus exclusions (${excluded}) do not account for its ${item.cohort.family_unit_count} family units`);\n    }\n\n    const selectedPerArm = new Map();\n    for (const trace of item.representative_traces) {\n      const variant = armVariants.get(trace.arm);\n      if (!variant || variant.id !== trace.variant_id) throw new Error(`${where} representative trace names a variant that is not that arm's variant`);\n      if (!unitsByID.has(trace.analysis_unit_id)) throw new Error(`${where} representative trace ${trace.analysis_unit_id} is not an analysis unit of this report`);\n      if (!familyUnits.has(trace.analysis_unit_id)) throw new Error(`${where} representative trace ${trace.analysis_unit_id} is not a member of the cohort's task family`);\n      if (!variant.analysis_unit_ids.includes(trace.analysis_unit_id)) throw new Error(`${where} representative trace ${trace.analysis_unit_id} did not run that arm's workflow variant`);\n      selectedPerArm.set(trace.arm, (selectedPerArm.get(trace.arm) ?? 0) + 1);\n    }\n    for (const [arm, count] of selectedPerArm) {\n      if (count > 3) throw new Error(`${where} arm ${arm} carries ${count} representative traces, more than three`);\n    }\n\n    const slice = item.causal_slice;\n    const sliceVariant = variantsByID.get(slice.variant_id);\n    if (!sliceVariant) throw new Error(`${where} causal slice references a workflow variant that is not in this report`);\n    if (sliceVariant.id !== armVariants.get(\"baseline\").id) throw new Error(`${where} causal slice is not taken from the baseline arm's variant`);\n    const sliceNodes = new Set(sliceVariant.nodes.map((node) => node.id));\n    if (slice.manifestation_node_id !== \"\" && !sliceNodes.has(slice.manifestation_node_id)) {\n      throw new Error(`${where} manifestation node ${slice.manifestation_node_id} is not a node of variant ${sliceVariant.id}`);\n    }\n    if (item.diagnosis.manifestation.node_id !== slice.manifestation_node_id) {\n      throw new Error(`${where} diagnosis manifestation node disagrees with its causal slice`);","sourceCodeStart":144,"sourceCodeEnd":180,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/766dce6b1394ebb56a3090748d5a0240a5aefb36/packages/shared/contracts/scripts/validate-continuous-improvement.mjs#L144-L180","documentation":"A representative trace's analysis_unit_id must resolve in unitsByID, the map of report.analysis_units (validate-continuous-improvement.mjs:162). Representative traces are evidence drawn from the report's own population, so a unit id that exists nowhere in this report — a typo, or a unit defined only in a sibling fixture — is rejected.","triggerScenarios":"trace.analysis_unit_id is a typo (unit-091 vs unit-901); the analysis_units entry was pruned while its trace was kept; the fixture was split across files, leaving the unit in another report.","commonSituations":"Renumbering unit ids when reorganizing fixtures; trimming the analysis_units array to shrink a file; generators that emit traces from a unit list that was later filtered.","solutions":["Restore or correct the unit id so it matches an entry in this report's analysis_units.","If the unit was pruned, either put it back or drop the trace that cites it.","Keep each case's traces and the units they cite in the same report file, then re-run the validator."],"exampleFix":"// before — report defines analysis unit \"unit-901\"\n{ \"arm\": \"baseline\", \"variant_id\": \"wf-build-01\", \"analysis_unit_id\": \"unit-091\" }\n// after\n{ \"arm\": \"baseline\", \"variant_id\": \"wf-build-01\", \"analysis_unit_id\": \"unit-901\" }","handlingStrategy":"validation","validationCode":"const danglingTraceUnits = (report) => {\n  const ids = new Set(report.analysis_units.map((u) => u.id));\n  return report.cases.flatMap((c) =>\n    c.representative_traces.filter((t) => !ids.has(t.analysis_unit_id)).map((t) => `${c.id}:${t.analysis_unit_id}`));\n};","typeGuard":null,"tryCatchPattern":"try {\n  execFileSync(process.execPath, [VALIDATOR, reportPath, spansPath]);\n} catch (err) {\n  if (/not an analysis unit of this report/.test(err.message)) {\n    failCI(`trace cites a unit outside this report: ${err.message}`);\n  } else throw err;\n}","preventionTips":["Keep traces and the analysis_units they cite in the same fixture.","On unit-id renumbering, sweep representative_traces and dataset source_unit_ids together.","Prefer generator-selected traces over hand-picked ones."],"tags":["fixtures","cross-validation","representative-trace","analysis-unit","referential-integrity"],"backgroundTag":"dangling-id-reference","analyzedSha":"766dce6b1394ebb56a3090748d5a0240a5aefb36","analyzedAt":"2026-08-18T03:14:35.516Z","contentChangedAt":"2026-08-18T03:14:35.516Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}