Overview
The NexLog OS YMS controls the yard, gatehouse and dock scheduling: dock scheduling, call-to-dock, gate kiosk, check-in and check-out and exception playbooks.
Dwell time and turn time KPIs come from the same events that feed the WMS and TMS, with no parallel spreadsheet.
Core entities
The canonical YMS model, shared with WMS waves and TMS routing.
| Entity | Code | Description |
|---|---|---|
| Dock appointment | dockSchedules | Time window reserved for a specific dock; integrates with TMS routing and WMS waves. |
| Yard vehicle | yardVehicles | Vehicle present in the yard; tracks check-in, position, status (waiting, loading, released) and check-out. |
Operational flows
Six flows for a yard without queues.
Dock scheduling
Online dock scheduling with time windows, recurrence and capacity by vehicle type.
Call-to-dock
Automatically calls vehicles in the yard to available docks, via SMS, push or app.
Gate kiosk
Self-service for drivers: CPF, CNH, CT-e, NF-e, photo and LGPD consent form.
Check-in and check-out
Records with auditable timestamps; feeds dwell time and turn time per dock.
Playbooks
Automatic handling of occupancy, missing documents, missed time windows and critical exceptions.
Exception engine
Escalates to Control Tower the exceptions the playbook can't solve.
REST endpoints
Endpoints grouped under /api/v1/yard/.
| Endpoint | Methods |
|---|---|
/api/v1/yard/dock-schedules | GET, POST |
/api/v1/yard/vehicles | GET |
/api/v1/yard/check-in | POST |
/api/v1/yard/check-out | POST |
/api/v1/yard/call-to-dock | POST |
Convention: endpoints in kebab-case, versioned under /api/v1/, and collections in camelCase.
KPIs the YMS delivers
Dwell time
Average time a vehicle stays in the yard between check-in and check-out.
Turn time
Time between call-to-dock and vehicle release; the main driver of dock productivity.
The YMS as the link between WMS and TMS
The yard costs more than it seems
Every minute of waiting in the yard means demurrage, daily charges, contractual penalties and lower OTIF. The NexLog OS YMS works on that link: Dock Appointment (dockSchedules) and Yard Vehicle (yardVehicles) share the same MDM as the WMS (waves) and the TMS (routing).
As a result, scheduling becomes a decision informed by real capacity, not by a spreadsheet.
Self-service at the gate
The kiosk turns check-in into self-service: the driver enters their CPF and CNH, registers the CT-e and NF-e, takes a photo and accepts the LGPD consent form. Call-to-dock notifies the driver when the dock is free and directs them there automatically.
Playbooks, exceptions and Control Tower
Unexpected occupancy, missed time windows, incomplete documents and vehicles without an appointment are handled by configurable playbooks that try to resolve them without human intervention.
Whatever slips through goes to the Control Tower exception engine, traceable by the same correlationId as the corresponding shipment and order. That is what makes the YMS a first-class module of the supply chain operating system.