UND

The timestamp left by a VAN that stored the message before relay.

Definition

UND carries a VAN service identifier, a VAN reception date/time, and a relay date/time. Provides traceability of the latency added by the network.

Origin

Optional segment defined by legacy VANs (GEIS, IBM Global Network, Easylink) and formalised in the EDIFACT D.96A directory.

Example in context

UND+VANXYZ+260514:1500+260514:1530'

VAN — value-added network that stamps UND.