Unassigned jobs
When job cannot be assigned, it goes to the list of unassigned jobs:
"unassigned": [
{
"jobId": "job2",
"reasons": [
{
"code": "TIME_WINDOW_CONSTRAINT",
"description": "cannot be visited within time window",
"details": [
{
"vehicle_id": "vehicle_1",
"shift_index": 0
}
]
}
]
Each item in this list has job id, reason code, description and, optionally, some extra details like vehicle id and shift index. You will get as many reasons as tours in the solution. This information can be used to understand why the job was not added to the existing tours.
Reasons of unassigned jobs
| code | description | possible action |
|---|---|---|
| NO_REASON_FOUND | unknown | |
| SKILL_CONSTRAINT | cannot serve required skill | allocate more vehicles with given skill? |
| TIME_WINDOW_CONSTRAINT | cannot be visited within time window | allocate more vehicles, relax time windows, etc.? |
| CAPACITY_CONSTRAINT | does not fit into any vehicle due to capacity | allocate more vehicles? |
| REACHABLE_CONSTRAINT | location unreachable | change job location to routable place? |
| MAX_DISTANCE_CONSTRAINT | cannot be assigned due to max distance constraint of vehicle | allocate more vehicles? |
| MAX_DURATION_CONSTRAINT | cannot be assigned due to max duration constraint of vehicle | allocate more vehicles? |
| BREAK_CONSTRAINT | break is not assignable | correct break location or/and time window? |
| LOCKING_CONSTRAINT | cannot be served due to relation lock | review relations? |
| AREA_CONSTRAINT | cannot be assigned due to area constraint | make sure that jobs inside allowed areas |
| TOUR_SIZE_CONSTRAINT | cannot be assigned due to tour size constraint of vehicle | make sure that there are enough vehicles to serve jobs |
| TOUR_ORDER_CONSTRAINT | cannot be assigned due to tour order constraint | tour order might be too strict or not vehicles enough |
| GROUP_CONSTRAINT | cannot be assigned due to group constraint | try to reduce amount of jobs in the group? |
| COMPATIBILITY_CONSTRAINT | cannot be assigned due to compatibility constraint | review job's compatibilities |
| RELOAD_RESOURCE_CONSTRAINT | cannot be assigned due to reload resource constraint | review shared resource allocation for vehicle reloads |
Example
An example of problem with unassigned jobs can be found here.