CONSTRAINT / LOAD-ORDER
Load order
A geometrically reachable loading and unloading sequence, so an item due at a later stop is never buried under one that comes off earlier.
stop_index · loading sequenceWhy it exists
A compact result that cannot be unloaded in the order the route needs costs more on the dock than the space it saved.
What a useful refusal looks like
The engine returns the rule that refused, the item it refused, and the measured value against the configured threshold. It also states how strongly that is backed: proven, observed, inferred, or unknown because a search limit was reached first.
See the fixtures for this rule ↗