| Return to EDIFACT 40100 Segments page. 
 
| UST -  | 
Security trailerUN/EDIFACT Syntax Version 4 Release 1 Segment List
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|  | Function: | To establish a link between security header and security trailer segment groups. |  
 |  | This segment also occurs in the following versions of this standard: 40000, 40100
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| Pos | Segment | M/C | Repeat | Repr. | Notes |  | 010 |  | 0534 | Security reference number | M | 1 | an..14 |  |  | 020 |  | 0588 | Number of security segments | M | 1 | n..10 |  | 
 
 
| Pos | Position | 
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 | M/C | Mandatory or Conditional | 
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 | Repr. | Representation (Data or Content Type) | 
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 | Notes: | 
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 | 1. | 0534, the value shall be identical to the value in 0534 in the corresponding USH segment. | 
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 | Segment UST is used in the following messages: | 
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| 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. |  Return to EDIFACT 40100 Segments page.
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