No one decides to run a cross-territory operation. It arrives one Tuesday at a time.
Why it matters
A single crossing looks cheap: one technician, one extra job, problem solved. The cost is paid elsewhere. The drive in and out is usually 30 to 50 minutes that nobody books against the job. The account loses its owner, so the next visit starts from zero. And the territory that could not absorb its own work gets no signal that it is over capacity, because the overflow was quietly absorbed by a neighbour.
How you notice it slipping
Count the appointments served by someone other than the owning technician, by week. If that number is stable and small, crossings are doing their job as a release valve. If it is growing, it has become the plan — and the territory map on the wall is no longer a description of anything.
What to do
Make crossings visible and reversible. Record a reason on each one, review them weekly, and treat a repeated crossing as evidence for rebalancing the boundary rather than as a scheduling success. The fix is almost never better dispatch; it is a territory that stopped fitting.