UGH
The opening segment of a group of secured EDIFACT objects.
Definition
UGH is used by EDIFACT security envelopes (ISO 9735 parts 5 and 6) to structure multiple objects — typically detached signatures, certificates, authentication results. It is paired with UGT (trailer).
Origin
Defined by ISO 9735-5 (Security rules for batch EDI — authenticity, integrity, non-repudiation of origin) and 9735-6 (Secure authentication and acknowledgement message AUTACK).
Example in context
UGH+1' — opens secured object group 1.