EANCOM PART I    
         
Segment Layout - UNA segment
   
UNA - C 1 - SERVICE STRING ADVICE
Function:
To head, identify and specify a message.
 

 

EDIFACT
EAN
*
Description  
UNA1
Component data element separator
M   an1
M
 

 

Is used as a separator between component data elements contained within a composite data element (default value : )  
UNA2
Data element separator
M  
 

 

 

 

Is used to separate two simple or composite data elements (default value : + )  
UNA3
Decimal notation
M   an1
M
 
Is used to indicate the character used for decimal notation (default value : . )  
UNA4
Release character
M   an1
M
 
Used to restore the separator and the terminator signs to their original specification (default value: ? )  
UNA5
Reserved for future use
M   an1
M
 
(default value : space )  
UNA6
Segment terminator
M   an1
M
 
Used to indicate the end of segment data (default value : ‘ )  
Segment Notes:
This segment is used to inform the receiver of the interchange that a set of service string characters which are different to the default characters are being used.

When using the default set of service string characters the UNA segment need not be sent. When it is sent it must immediately precede the UNB segment and contain the six service string characters selected by the interchange sender.

Regardless of whether or not all of the service string characters are being changed every data element within this segment must be filled, i.e. if some default values are being used with user defined ones then both the default and user defined values must be specified.

When expressing the service string characters in the UNA segment it is not necessary to include any element separators.
     
(c) Copyright EAN 1997