Soft-deletes the service area: it disappears from listServiceAreas and stops counting for coverage immediately. Technician assignments to it are left in place but no longer grant coverage.
The consequence is easy to underestimate: technicians whose only coverage was this area become unmatchable for addresses inside it. Jobs already assigned keep their technician, but any re-plan (reassign, board move, confirm of a pending job, the slot picker) can find no feasible crew there. Before deleting, re-check listCrewCandidates on upcoming jobs in that territory.
If you are reshaping coverage rather than withdrawing from it, edit the polygon or postal/city fields with updateServiceArea instead; that keeps the area and its technician assignments working.
