Software Design

How Courier Package Tracking State Machines Work

State Diagrams · made in Skemio

State diagram of courier tracking states starting from Label Created to In Transit, Out for Delivery, branching to Delivered or Failed Attempt, and ending at final.
State diagram of courier tracking states starting from Label Created to In Transit, Out for Delivery, branching to Delivered or Failed Attempt, and ending at final.
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What it shows

  • Label Created registers shipping intent before physical possession.
  • In Transit captures multi-hop sorting hub and line-haul scans.
  • Failed attempts loop through redelivery before marking returned.

The takeaway

Tracking APIs rely on strict transition validation to prevent ghost deliveries.

More state diagrams