Service Segments

Segments of standard ISO9735

Following a list of all segments defined in standard release ISO9735.

Segment	Description
UCD	DATA ELEMENT ERROR INDICATION To identify an erroneous stand-alone, composite or component data element, and to identify the nature of the error.
UCF	GROUP RESPONSE To identify a group in the subject interchange and to indicate acknowledgement or rejection (action taken) of the UNG and UNE segments, and to identify any error related to these segments. It can also identify errors related to the USA, USC, USD, USH, USR, UST, or USU security segments when they appear at the group level. Depending on the action code, it may also indicate the action taken on the messages and packages within that group.
UCI	INTERCHANGE RESPONSE To identify the subject interchange, to indicate interchange receipt, to indicate acknowledgement or rejection (action taken) of the UNA, UNB and UNZ segments, and to identify any error related to these segments. It can also identify errors related to the USA, USC, USD, USH, USR, UST, or USU security segments when they appear at the interchange level. Depending on the action code, it may also indicate the action taken on the groups, messages, and packages within that interchange.
UCM	MESSAGE/PACKAGE RESPONSE To identify a message or package in the subject interchange, and to indicate that message's or package's acknowledgement or rejection (action taken), and to identify any error related to the UNH, UNT, UNO, and UNP segments. It can also identify errors related to the USA, USC, USD, USH, USR, UST, or USU security segments when they appear at the message or package level.
UCS	SEGMENT ERROR INDICATION To identify either a segment containing an error or a missing segment, and to identify any error related to the complete segment.
UGH	ANTI-COLLISION SEGMENT GROUP HEADER To head, identify and specify an anti-collision segment group.
UGT	ANTI-COLLISION SEGMENT GROUP TRAILER To end and check the completeness of an anti-collision segment group.
UIB	INTERACTIVE INTERCHANGE HEADER To head and identify an interchange.
UIH	INTERACTIVE MESSAGE HEADER To head, identify and specify a message.
UIR	INTERACTIVE STATUS To report the status of the dialogue.
UIT	INTERACTIVE MESSAGE TRAILER To end and check the completeness of a message.
UIZ	INTERACTIVE INTERCHANGE TRAILER To end and check the completeness of an interchange.
UNB	INTERCHANGE HEADER To identify an interchange.
UNE	GROUP TRAILER To end and check the completeness of a group.
UNG	GROUP HEADER To head, identify and specify a group of messages and/or packages, which may be used for internal routing and which may contain one or more message types and/or packages.
UNH	MESSAGE HEADER To head, identify and specify a message.
UNO	OBJECT HEADER To head, identify and specify an object.
UNP	OBJECT TRAILER To end and check the completeness of an object.
UNS	SECTION CONTROL To separate header, detail and summary sections of a message.
UNT	MESSAGE TRAILER To end and check the completeness of a message.
UNZ	INTERCHANGE TRAILER To end and check the completeness of an interchange.
USA	SECURITY ALGORITHM To identify a security algorithm, the technical usage made of it, and to contain the technical parameters required.
USB	SECURED DATA IDENTIFICATION To contain details related to the AUTACK.
USC	CERTIFICATE To convey the public key and the credentials of its owner.
USD	DATA ENCRYPTION HEADER To specify size (i.e. length of data in octets of bits) of encrypted data following the segment terminator of this segment.
USE	SECURITY MESSAGE RELATION To specify the relation to earlier security messages, such as response to a particular request, or request for a particular answer.
USF	KEY MANAGEMENT FUNCTION To specify the type of key management function and the status of a corresponding key or certificate.
USH	SECURITY HEADER To specify a security mechanism applied to a EDIFACT structure (i.e.: either message/package, group or interchange).
USL	SECURITY LIST STATUS To specify the status of security objects, such as keys or certificates to be delivered in a list, and the corresponding list parameters.
USR	SECURITY RESULT To contain the result of the security mechanisms.
UST	SECURITY TRAILER To establish a link between security header and security trailer segment groups.
USU	DATA ENCRYPTION TRAILER To provide a trailer for the encrypted data.
USX	SECURITY REFERENCES To refer to the secured EDIFACT structure and its associated date and time.
USY	SECURITY ON REFERENCES To identify the applicable header, and to contain the security result and/or to indicate the possible cause of security rejection for the referred value.