Overview
ISO/IEC 10021-8:1999 - Electronic Data Interchange (EDI) Messaging Service - is part of the ISO/IEC 10021 series that defines Message Handling Systems (MHS). Published as the second edition in 1999 (aligned with ITU‑T Recommendation F.435), this part describes the overall system and service model for carrying EDI messages over an MHS store‑and‑forward infrastructure. It explains roles, information flows, and service elements required to support automated business data interchange within the X.400/MHS environment.
Key topics and technical requirements
ISO/IEC 10021-8 covers the high‑level structure and service definitions rather than low‑level protocol syntax. Major technical subjects include:
- EDI messaging service model: definition of the service, environment, and EDI messaging users.
- System components: EDI user agents, message stores, message transfer systems (MTAs), and access units.
- Information flow and message structure: logical flow diagrams and the composition of EDI messages for transport.
- EDIM responsibility & forwarding: rules for forwarding, secondary distribution, and responsibility transfer for EDI messages.
- Naming, addressing & directory use: guidance for addressing EDI users and integrating directories.
- Security overview: security elements and where secure messaging features apply across MHS components.
- Interworking with physical delivery services: handling of delivery notifications and physical rendition when required.
- Message store use & optional facilities: use of stores, classification of basic and optional service elements, and per‑message or contractual options.
- Quality of service (QoS): message and notification status, delivery/notification time models, availability and error protection expectations.
- Normative and informative annexes: glossary, service element definitions, security details, naming/addressing examples, and cross‑referencing.
The standard also imports terminology from related EDI specifications (for example, ISO 9735/EDIFACT and ANSI X12) where relevant.
Practical applications and who uses it
ISO/IEC 10021-8 is useful for:
- System architects and developers designing MHS/X.400‑based EDI solutions.
- Service providers and operators defining EDI messaging service offerings, SLAs and QoS targets.
- Integrators and implementers mapping business EDI formats onto messaging infrastructures and implementing forwarding/notification policies.
- Standards bodies and auditors aligning EDI over MHS deployments with international practice.
It is particularly relevant where organizations require reliable, managed store‑and‑forward delivery of structured business documents (in regulated trading, supply chains, finance and government exchanges).
Related standards
- ISO/IEC 10021 (other parts): overall MHS architecture, message transfer, message store, protocols, interpersonal messaging.
- ITU‑T F.435 (1999): corresponding EDI messaging Recommendation.
- ISO 9735 (EDIFACT) and ANSI X12: EDI message format references and imported terms.
Keywords: ISO/IEC 10021-8, EDI messaging, Message Handling Systems, MHS, X.400, EDIM responsibility, message store, secure messaging, quality of service.