A subcontractor change can also change field staff and devices.

Four control fields

  • Subcontractor identity
  • Approval state
  • Data access
  • Emergency contact

Verify before work starts. Contract terms alone are insufficient. Check competence, equipment, logger access and event communication.

First-trip check

Check vehicle, container handling, data export, training and contact chain.

Link carrier, container, logger and handover time. Escalate missing evidence; leave disposition to the authorized role.