1.0.0

<div data-id="dip-landscape" style="text-align:justify">DIP landscape</div>

<div data-id="dip-core-services" style="text-align:justify">DIP Core Services</div>

<div data-id="dip-connections" style="text-align:justify">DIP Connections</div>

<div data-id="dip-users" style="text-align:justify">DIP Users</div>

<div data-id="active-market-participant" style="text-align:justify">Active <u class='defined-term'>Market Participant</u></div>

<div data-id="non-active-market-participant" style="text-align:justify">Non-active <u class='defined-term'>Market Participant</u></div>

<div data-id="dip-interfaces" style="text-align:justify">DIP interfaces</div>

<div data-id="the-dip-portal" style="text-align:justify">The DIP Portal</div>

<div data-id="registration" style="text-align:justify">Registration</div>

<div data-id="pki-role-governance" style="text-align:justify">PKI Role Governance</div>

<div data-id="interfacing-with-the-dip" style="text-align:justify">Interfacing with the DIP</div>

<div data-id="dip-access-and-participant-engagement" style="text-align:justify">DIP Access and participant engagement</div>

<div data-id="overview" style="text-align:justify">Overview</div>

<div data-id="dip-certificate-authority" style="text-align:justify">DIP Certificate <u class='defined-term'>Authority</u></div>

<div data-id="chain-of-trust" style="text-align:justify">Chain of trust</div>

<div data-id="1746019972408-digital-certificate-path" style="margin-left:0.5in;text-align:justify;text-indent:-0.5in"><img src="img/6812255834c50c9fec8b2eab/image21.png" alt="complex image of process" id="6812268434c50c9fec8b37c8"><b> </b><b>Digital Certificate Path</b></div>

<div data-id="digital-certificate-usage" style="text-align:justify">Digital Certificate usage</div>

<div data-id="key-management" style="text-align:justify">Key management</div>

<div data-id="digital-certificate-revocation" style="text-align:justify">Digital Certificate Revocation</div>

<div data-id="public-key-infrastructure" style="text-align:justify">Public Key Infrastructure</div>

<div data-id="security-requirements" style="text-align:justify">Security requirements</div>

<div data-id="information-security-management-system-certification" style="text-align:justify">Information Security Management <u class='defined-term'>System</u> certification</div>

<div data-id="tls-requirements-and-configuration" style="text-align:justify">TLS requirements and configuration</div>

<div data-id="tls-key-generation-and-csrs" style="text-align:justify">TLS key generation and CSRs</div>

<div data-id="dip-security-requirements" style="text-align:justify">DIP Security Requirements</div>

<div data-id="dip-users-responsibilities" style="text-align:justify">DIP Users responsibilities</div>

<div data-id="dns-domain-creationverification" style="text-align:justify">DNS Domain creation/verification</div>

<div data-id="dip-digital-certificate-requirements" style="text-align:justify">DIP Digital Certificate requirements</div>

<div data-id="certificate-subscriber-obligations" style="text-align:justify">Certificate Subscriber obligations</div>

<div data-id="relying-party-obligations" style="text-align:justify">Relying <u class='defined-term'>Party</u> Obligations</div>

<div data-id="certificate-revocation-request" style="text-align:justify">Certificate Revocation Request</div>

<div data-id="digital-certificate-renewal" style="text-align:justify">Digital Certificate renewal</div>

<div data-id="private-keys" style="text-align:justify">Private Keys</div>

<div data-id="encryption-secretspassword-guidance" style="text-align:justify">Encryption Secrets/Password Guidance</div>

<div data-id="managing-digital-certificates" style="text-align:justify">Managing Digital Certificates</div>

<div data-id="pattern-a-messageevent-channel" style="text-align:justify">Pattern ‘A’ message/event channel</div>

<div data-id="pattern-b-message-flow" style="text-align:justify">Pattern ‘B’ Message flow</div>

<div data-id="pattern-a-and-b-messages" style="text-align:justify">Pattern ‘A’ and ‘B’ messages</div>

<div data-id="message-architecture" style="text-align:justify">Message Architecture</div>

<div data-id="messageevent-channels" style="text-align:justify">Message/event channels</div>

<div data-id="mpan-address-maintenance-service" style="text-align:justify">MPAN Address Maintenance Service</div>

<div data-id="message-structure" style="text-align:justify">Message structure</div>

<div data-id="message-routing" style="text-align:justify">Message routing</div>

<div data-id="messageevent-obfuscation" style="text-align:justify">Message/event obfuscation</div>

<div data-id="message-compression-handling" style="text-align:justify">Message Compression Handling</div>

<div data-id="message-de-compression-handling" style="text-align:justify">Message De-compression Handling</div>

<div data-id="message-configuration-requirements" style="text-align:justify">Message configuration requirements</div>

<div data-id="message-egress" style="text-align:justify">Message Egress</div>

<div data-id="message-ingress" style="text-align:justify">Message Ingress</div>

<div data-id="capacity-management" style="text-align:justify">Capacity Management</div>

<div data-id="message-security" style="text-align:justify">Message Security</div>

<div data-id="message-alarms" style="text-align:justify">Message Alarms</div>

<div data-id="dip-messaging" style="text-align:justify">DIP Messaging</div>

<div data-id="simple-message-exchange" style="text-align:justify">Simple Message Exchange</div>

<div data-id="level-1-validation---dip-synchronous-rejection" style="text-align:justify">Level 1 validation - DIP Synchronous rejection</div>

<div data-id="level-2-validation--dip-asynchronous-rejection" style="text-align:justify">Level 2 validation – DIP asynchronous rejection</div>

<div data-id="level-3-response---recipient-synchronous-error-with-retry" style="text-align:justify">Level 3 response - Recipient Synchronous Error (with retry)</div>

<div data-id="level-3-validation---recipient-synchronous-response-no-retry" style="text-align:justify">Level 3 validation - Recipient Synchronous Response (no-retry)</div>

<div data-id="level-4-validation---recipient-validation-response-asynchronous" style="text-align:justify">Level 4 validation - Recipient validation response (asynchronous)</div>

<div data-id="consumption-replay" style="text-align:justify"><u class='defined-term'>Consumption</u> Replay</div>

<div data-id="recipient-timeout-and-dead-letter-queue-handling" style="text-align:justify">Recipient timeout and ‘Dead-Letter Queue’ handling</div>

<div data-id="error-handling-amp-message-distribution-patterns" style="text-align:justify">Error Handling &amp; Message Distribution Patterns</div>

<div data-id="batch-message-handling" style="text-align:justify">Batch Message Handling</div>

<div data-id="workflow-message-handling" style="text-align:justify">Workflow message handling</div>

<div data-id="message-choreography" style="text-align:justify">Message choreography</div>

<div data-id="send-messages-api" style="text-align:justify">Send Messages API</div>

<div data-id="send-message-dip-processing-level-1-validation" style="text-align:justify">Send message DIP Processing (Level 1 Validation)</div>

<div data-id="receive-message-webhooks" style="text-align:justify">Receive Message Webhooks</div>

<div data-id="receive-message-call-back-request-structure" style="text-align:justify">Receive Message Call back Request structure</div>

<div data-id="recipient-responsibilities" style="text-align:justify">Recipient responsibilities</div>

<div data-id="replay-events" style="text-align:justify">Replay events</div>

<div data-id="message-return-codes-and-response-body" style="text-align:justify">Message return codes and response body</div>

<div data-id="dip-api-actions" style="text-align:justify">DIP API Actions</div>

<div data-id="api-version-control" style="text-align:justify">API Version Control</div>

<div data-id="message-channel-versioning" style="text-align:justify">Message channel versioning</div>

<div data-id="multi-version-support--api-and-message-channels" style="text-align:justify">Multi-version support – API and message channels</div>

<div data-id="api-key-rotation" style="text-align:justify">API Key rotation</div>

<div data-id="use-of-apis-and-webhooks" style="text-align:justify">Use of APIs and Webhooks</div>

<div data-id="digital-signatures" style="text-align:justify">Digital signatures</div>

<div data-id="digital-signature-formats" style="text-align:justify">Digital signature formats</div>

<div data-id="message-signing" style="text-align:justify">Message signing</div>

<div data-id="verifying-signatures" style="text-align:justify">Verifying signatures</div>

<div data-id="signature-key-generation-and-csrs" style="text-align:justify">Signature key generation and CSRs</div>

<div data-id="signatures" style="text-align:justify">Signatures</div>

<div data-id="number-of-channels-and-dip-users" style="text-align:justify">Number of channels and DIP Users</div>

<div data-id="transactional-volumes" style="text-align:justify">Transactional volumes</div>

<div data-id="message-latency" style="text-align:justify">Message Latency</div>

<div data-id="system-availability" style="text-align:justify"><u class='defined-term'>System</u> availability</div>

<div data-id="dip-capabilities" style="text-align:justify">DIP capabilities</div>

CONTENTS

22 10mb V1.0.0

Defined Terms

Cross-references