By the Problem on the Desk.

The catalogue routed by the structural condition that distinguishes the seat — not by the title on the org chart.

A federal-counterparty design-build-operate prime owns the workforce architecture for a 25-30 year operations phase against a Sondervermögen-funded programme. A specialty electrical or metalwork sub two tiers below the principal owns a Vergabesperre threshold that is structurally low against its three-year exposure base. A specialty-foundations buyer owns a multi-axis Qualibat × amiante × Bergbau-Folge-Sanierung cert stack convergence the Tier-1 GU procurement reads as one line. A marine-construction prime owns a vessel-charter-bound workforce window where the charter sails on schedule regardless of what crew boards. A regional director on a €100M civil bid owns no-fault joint liability across a multi-tier chain. A Kalkulationsleiter at a precision-MEP Generalunternehmer owns a Tarif matrix that splits per Niederlassung under the Predominanz-Prinzip. An EPC integrator owns a pressure-part welder corridor under net-zero capex commitments. A hyperscale data-centre GC owns non-portable Cx credentials across hyperscaler clients. A rail-civil prime owns possession-windows that do not return. A listed-parent group CFO owns the four-hop ESRS S2 disclosure flow-through. Eleven structural problems. Eleven catalogue subsets. One door each.