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USH -

Security header
UN/EDIFACT Syntax Version 4 Release 1 Segment List

Function:To specify a security mechanism applied to a EDIFACT structure (i.e.: either message/package, group or interchange).
This segment also occurs in the following versions of this standard:
40000, 40100

Pos Segment M/C Repeat Repr. Notes
010 0501 Security service, coded M 1 an..3
020 0534 Security reference number M 1 an..14
030 0541 Scope of security application, coded C 1 an..3
040 0503 Response type, coded C 1 an..3
050 0505 Filter function, coded C 1 an..3
060 0507 Original character set encoding, coded C 1 an..3
070 0509 Role of security provider, coded C 1 an..3
080 S500 SECURITY IDENTIFICATION DETAILS C 2
0577 Security party qualifier M an..3
0538 Key name C an..35
0511 Security party identification C an..1024
0513 Security party code list qualifier C an..3
0515 Security party code list responsible agency, coded C an..3
0586 Security party name C an..35
0586 Security party name C an..35
0586 Security party name C an..35
090 0520 Security sequence number C 1 an..35
100 S501 SECURITY DATE AND TIME C 1
0517 Date and time qualifier M an..3
0338 Event date C n..8
0314 Event time C an..15
0335 Language, coded C an..3

PosPosition
M/CMandatory or Conditional
Repr.Representation (Data or Content Type)
Notes:
1.0541, if not present the default scope is the current security header segment group and the message body or object itself.
2.0507, the original character set encoding of the EDIFACT structure when it was secured. If no value is specified, the character set encoding corresponds to that identified by the syntax identifier character repertoire in the UNB segment.
3.S500, two occurrences are possible: one for the security originator, one for the security recipient.
4.S500/0538, may be used to establish the key relationship between the sending and receiving parties.
5.S501, may be used as a security timestamp. It is security related and may differ from any dates and times that may appear elsewhere in the EDIFACT structure. It may be used to provide sequence integrity.

Segment USH is used in the following messages:
AUTACK

Change indicators
plus sign An addition.
asterisk Addition/substraction/change to a code entry for a particular data element.
hash or pound sign Changes to names.
vertical bar Changes to text for descriptions, notes and functions.
minus sign A deletion.
letter X Marked for deletion.

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