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Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

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X12 163 — Transportation Appointment Schedule Information

Communication of loading/unloading appointment windows between carrier and facility. Dock-scheduling efficiency pivot.

Purpose

The 163 coordinates transport appointments between a carrier and a site (warehouse, retail DC, manufacturer plant). Several cases: appointment request, confirmation, modification, cancellation. Avoids detention/demurrage by synchronising arrivals with dock-handling capacity. Used massively by Walmart, Target, Amazon, and their suppliers.

Envelope structure

The 163 travels inside the three X12 envelope levels (ISA/IEA, GS/GE with functional group TI, and ST/SE). Didactic example in 004010:

x12 example-163.x12 
ISA*00*          *00*          *ZZ*CARRIER01     *ZZ*RETAILDC      *260516*2030*U*00401*000000163*0*P*>~
GS*TI*CARRIER01*RETAILDC*20260516*2030*1*X*004010~
ST*163*0001~
B6*RQ*APPT-001*20260516~
N1*CA*ACME TRUCKING*92*ACMETRK~
N1*ST*RETAIL DC DALLAS*92*RDCDAL~
BX*00*S*PP*PO-2026-001*XYZ*L*A~
DTM*002*20260520~
DTM*003*0900~
REF*PO*PO-2026-001~
SE*8*0001~
GE*1*1~
IEA*1*000000163~

Common segments

  • Header — ST, B6 Beginning of Appointment Schedule.
  • Carrier — N1*CA.
  • Facility — N1*SF or N1*ST.
  • Appointment detail — BX, DTM*002 appt date, DTM*003 appt time.
  • Reference — REF*PO linked PO.
  • Summary — SE.

Common pitfalls

  • Window too wide: "between 0900 and 1700" saturates the dock. Specify a 30-60 min slot.
  • No referenced PO: the site does not know what to expect when the truck arrives.
  • Modification without prior cancellation: two active appointments for the same truck saturate the calendar.

Documentation

The 163 code and the Transportation Appointment Schedule Information name are public and listed at x12.org/products/transaction-sets. The full loops/qualifiers/code-lists structure is distributed by DISA via proprietary Implementation Guides (TR3). ediverse.io covers only public concepts, the envelope and didactic examples.