What is AS4 in EDI?
AS4 (Applicability Statement 4) is a modern secure
web services-based communication protocol used for B2B data exchange,
especially in EDI (Electronic Data Interchange). It is a successor to
AS2, offering enhanced security, reliability, and flexibility using SOAP
and web services standards.
Key Components of AS4 Architecture
|
Component |
Description |
|
SOAP Envelope |
AS4 uses SOAP 1.2 for message
structure. |
|
ebMS Header |
Metadata such as sender, receiver,
message ID, and action. |
|
Payload |
Can be any type (XML, EDIFACT, X12,
etc.). |
|
WS-Security |
Ensures message encryption, signature,
and integrity. |
|
Reliability |
Built-in retry, duplicate detection,
and delivery tracking. |
|
P-Mode |
Configuration setting that governs how
messages are exchanged between partners (like service agreements). |
