[{"data":1,"prerenderedAt":111},["ShallowReactive",2],{"glossary-as4":3},{"id":4,"title":5,"body":6,"description":100,"extension":101,"lastUpdatedAt":102,"letter":103,"meta":104,"navigation":105,"path":106,"seo":107,"stem":108,"summary":109,"term":15,"__hash__":110},"glossary\u002Fglossary\u002Fas4.md","As4",{"type":7,"value":8,"toc":94},"minimark",[9,23,31,59,62,67],[10,11,12,16,17,22],"p",{},[13,14,15],"strong",{},"AS4"," (Applicability Statement 4) is the transport protocol used by ",[18,19,21],"a",{"href":20},"\u002Fglossary\u002Fpeppol","PEPPOL"," access points to exchange business documents. It is an OASIS standard based on the ebMS 3.0 messaging specification and is designed for reliable, secure, point-to-point message exchange between trading partners.",[10,24,25,26,30],{},"When a sender's ",[18,27,29],{"href":28},"\u002Fglossary\u002Faccess-point","access point"," delivers an invoice to a receiver's access point, it uses AS4. The protocol handles:",[32,33,34,41,47,53],"ul",{},[35,36,37,40],"li",{},[13,38,39],{},"Encryption"," — the message payload is encrypted end-to-end",[35,42,43,46],{},[13,44,45],{},"Digital signatures"," — both sender and receiver sign messages, providing non-repudiation",[35,48,49,52],{},[13,50,51],{},"Reliable delivery"," — acknowledgements confirm successful receipt",[35,54,55,58],{},[13,56,57],{},"Message integrity"," — the payload cannot be altered in transit",[10,60,61],{},"AS4 replaced the older AS2 protocol in PEPPOL from 2020 onwards. All PEPPOL-certified access points are required to support AS4.",[63,64,66],"h3",{"id":65},"key-facts","Key facts",[32,68,69,75,81,84,87],{},[35,70,71,72],{},"Standard: ",[13,73,74],{},"OASIS AS4 Profile of ebMS 3.0",[35,76,77,78,80],{},"Used by: all ",[18,79,21],{"href":20}," access points (mandatory since 2020)",[35,82,83],{},"Provides: encryption, digital signing, non-repudiation, reliable delivery",[35,85,86],{},"Replaced: AS2 (older PEPPOL transport protocol)",[35,88,89,90],{},"Certification: access points are tested for AS4 conformance by ",[18,91,93],{"href":92},"\u002Fglossary\u002Fopenpeppol","OpenPEPPOL",{"title":95,"searchDepth":96,"depth":96,"links":97},"",2,[98],{"id":65,"depth":99,"text":66},3,"AS4 (Applicability Statement 4) is the transport protocol used by PEPPOL access points to exchange business documents. It is an OASIS standard based on the ebMS 3.0 messaging specification and is designed for reliable, secure, point-to-point message exchange between trading partners.","md","2026-04-21","A",{},true,"\u002Fglossary\u002Fas4",{"description":100},"glossary\u002Fas4","The secure messaging protocol used by PEPPOL access points to exchange business documents between sender and receiver.","LNejJU87JMDd7S44BrOsvnoPSiS-a5wKRa5LeUCeZPQ",1776886794408]