EANCOM® 2002 S4 Edition 2016 Part II
AUTACK Secure authentication and acknowledgement message
5. Segments Layout
 
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SG4 - M 99 -
UST
A group of segments containing a link with security header segment group and the result of the security services applied to the message/package.
UST - M 1 -
Security trailer
  Function:
  To establish a link between security header and security trailer segment groups.

Notes:
1. 0534, the value shall be identical to the value in 0534 in the corresponding USH segment.
 
EDIFACT
EAN *
Description
0534
Security reference number
M an..14
M  
Unique reference number assigned by the security originator to the security header group, security trailer group and the USY segment (USH, DE 0534; UST, DE 0534 and USY, DE 0534).
0588
Number of security segments
M n..10
M  
The number of security segments in a security header/trailer group pair. Only the segment goups 1, 2 and 4 are counted.
Each security header/trailer group pair shall contain its own count of the number of security segments within that group pair.
Segment Notes:
A segment establishing a link between security header and security trailer segment group, and stating the number of security segments in these groups.

Example:
UST+1+5'
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