# Shipment tracking: turn milestones into action

[Source](https://onechain-tms.com/en/blog/tracking-en-temps-reel-la-cle-de-voute-de-la-logistique-moderne/)

Language: en

Author: OneChain

Updated: 2026-09-17

Knowing that a vessel is near port does not mean the goods will arrive tomorrow. **Shipment visibility becomes useful when it connects an event to an action.**

## Separate position, milestone and forecast

A position locates a transport asset. A milestone describes a step, such as departure or discharge. An ETA is an estimated arrival that can change. These data points have different sources and update frequencies.

In OneChain, the [shipment file](https://onechain-tms.com/en/transport-management) brings available milestones, documents and partner discussions together. Received data and participant updates complement each other.

## Act on date changes

When an arrival moves, identify the consequences: a warehouse appointment to review, a missing document or a delivery to reorganize. Assign an owner and next action to the relevant file.

Read operational information with its date and source. An old estimate should not be treated as a confirmed event.

## Connect visibility to the wider process

Shared references link orders, shipments and documents. ERP exchanges and notifications are defined according to covered systems and workflows.

Assess visibility on your actual scope: files with usable milestones, missing information and time needed to handle an exception. Tracking quality also depends on whether your teams can act on it.