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Release 2026-05-31.3.0.0

· 5 min read

Summary​

This major release of Ark introduces a more flexible foundation for connecting to downstream providers, orchestrating onboarding journeys, and modelling the businesses and individuals you serve. Highlights include a new connector routing capability, Ark Flows for workflow orchestration, an expanded party model that now supports companies and sole traders, and a configurable business rules engine.

This release also brings new and expanded connectors, a vendor-agnostic approach to identity verification, and a range of behavioural and quality improvements across the platform. Some integrations will need minor updates to move smoothly onto this release; the highlights are outlined in the Migration or Upgrade Notes below, and your support representative can help with the specifics.

What's New​

New Features & Endpoints​

Connector Routing​

Ark now resolves the right downstream provider for each request through a flexible, configurable routing capability. Routing can take provider health and priority into account when selecting where to send a request, giving you more control over how Ark connects to underlying providers without changing how you call the API. This supersedes the previous mapping-based approach to selecting connectors.

Ark Flows​

Ark now offers workflow orchestration through Ark Flows, allowing onboarding journeys to be coordinated as managed, multi-step workflows. This provides a more reliable and observable way to run the longer-running processes that onboarding often involves.

Expanded Parties​

The party model has been extended beyond individuals to support a wider range of onboarding scenarios:

  • Company parties - create, manage, and provision company entities.
  • Sole trader parties - create and manage sole traders, including ABN and trading name details.
  • Party relationships - associate parties with one another (for example, directors or secretaries of a company).
  • Party search - find existing parties by name.

Example Endpoints:

  • POST /v1/parties/{partyId}/relationships - Associate a related party (e.g. a director or secretary)
  • GET /v1/parties/search - Search for existing parties by name

Account Signatories​

Ark now provides account signatory management, letting you control who is authorised to act on an account.

  • GET /v1/accounts/{accountId}/signatories - List signatories for an account
  • POST /v1/accounts/{accountId}/signatories - Add a signatory to an account
  • DELETE /v1/accounts/{accountId}/signatories/{partyId} - Remove a signatory from an account

Business Rules Engine​

Ark now includes a configurable business rules engine, enabling decisioning logic to be defined and evaluated as part of your flows. Rules can be evaluated through the API, giving you a consistent way to apply business logic across journeys.

  • POST /v1/rules/{ruleKey}/evaluate - Evaluate a configured business rule

New & Expanded Connectors​

  • SimpleKYC - a new identity verification connector supporting KYC and KYB.
  • MessageMedia - a new SMS notification connector, now the default for notifications.
  • Vendor-agnostic KYX - identity verification is now modelled in a provider-agnostic way, so you can work with a consistent verification experience across underlying providers.

Changes & Improvements​

Identity verification (KYX) is now vendor-agnostic, providing a consistent model across the underlying verification providers. Notification and connector responses now include a vendor reference, making it easier to correlate Ark activity with the underlying provider. Connector routing replaces the previous mapping layer for selecting downstream providers.

Please review the Migration or Upgrade Notes section below for any changes that require action.

Fixes​

Resolved Issues​

  • Platform & Payments:

    • Transfer Initiation: POST transfer requests now return 201 Created in line with the API contract.
    • Improved serialisation of payments connector responses for greater reliability.

  • Kleber Connector:

    • Address Response Handling: Improved handling of empty and invalid address responses.
    • Corrected address unit field mapping.

Security Updates​

Authentication & Authorization​

No authentication or authorization changes in this release.

Known Issues​

No critical issues are currently known in this release.

For the latest information on identified issues, workarounds, and resolution timelines, please refer to the Ark Support page or contact your support representative.

Migration or Upgrade Notes​

This release includes a few integration updates to ensure a smooth upgrade. At a high level, clients should plan to:

  • Provide party context on requests using the partyid header.
  • Review error handling against the refreshed error codes and response statuses introduced in this release.
  • Update integrations for a small number of relocated admin and party-document endpoints.
  • Treat card and account identifiers as opaque values.

These updates are straightforward and can be planned alongside your usual integration testing. For the detailed migration guide and a full list of affected codes and endpoints, please refer to the Ark documentation or contact your support representative, who can help you plan the transition.

Documentation Updates​

OpenAPI Specification Updates​

OpenAPI specifications have been updated to reflect:

  • Company, sole trader, party relationship, and party search endpoints
  • Account signatory endpoints
  • Vendor-agnostic KYX identity verification
  • Business rules evaluation
  • New and updated connectors

Ark Docs Updates​

Documentation updates in this release include:

  • New and updated guides for Parties, KYX, and the new connectors
  • Connector routing and Ark Flows documentation
  • Refreshed API reference and migration guidance

Support & Resources​

For additional assistance with this release:

For questions or feedback about this release, please contact your support representative.