Determination Anywhere 2026.04 release notes

Please review this release note in conjunction with the Determination – Enterprise Cloud (EC) 2026.04 release notes, which outline key updates to the core application. These include enhancements to the tax engine logic, regulatory compliance improvements, UI feature upgrades, and may also highlight defect resolutions and known issues – all of which directly impact the tax engine's functionality within Determination Anywhere (DA).

Thomson Reuters recognizes that security vulnerabilities in software deployed within our own environments, or within our customer environments can pose significant risk. We conduct daily vulnerability scans of ONESOURCE Determination application code and dependencies. ONESOURCE Determination Anywhere container images are scanned daily to identify and remediate security vulnerabilities. While we strive to address zero-day vulnerabilities as rapidly as possible, remediation timelines follow the Thomson Reuters Information Security & Risk Management (ISRM) guidelines based on severity classifications identified by our scanning tool, Snyk – Critical (30 days), High (60 days), Medium & Low (best-effort basis in a future release). If vulnerabilities are found after software is released, Critical issues are fixed through urgent Production releases or in the next scheduled release cycle. We aim to uphold our commitment to providing secure solutions.

Determination Anywhere (DA) 2026.04 introduces enhancements to performance, scalability, and reporting integration. This release improves the audit transaction flow enabling faster synchronization of audited transaction data to the Reporting application. In addition, this release introduces clustered caching, enhancing application performance, resiliency, and scalability across distributed deployments.

The following topics outline the new features introduced in this release.

This enhancement modernizes the DA audited transaction synchronization process by aligning it with the ONESOURCE Enterprise Cloud (EC) architecture. DA transactions for customers running EC or the DA Mothership in AWS now leverage the Enterprise Data Framework (EDF) Kafka-based infrastructure instead of the legacy S3-based synchronization model. This provides a more streamlined and scalable path for audited transaction data and supports ongoing Reporting platform enhancements utilizing BigQuery (GCP).

By leveraging the GCP-based reporting architecture, audited transaction data can be made available to Reporting more quickly, reducing delays associated with the legacy ETL process and improving overall reporting timeliness.

To maintain consistency with EC processing limits and help prevent downstream synchronization failures, transaction invoice payloads exceeding 1 GB are rejected by the calculation engine. When this occurs, a validation message is returned in response to identify the issue. Customers receiving these validation errors should review and reduce the size of exceptionally large transaction payloads before resubmission.

This enhancement introduces clustered caching as an alternative to the existing time-based cache eviction mechanism used by DA Cloud. The new distributed cache invalidation approach helps ensure that all tax calculation pods within a cluster maintain a consistent cache state following configuration updates, improving synchronization and data consistency across the environment.

Key benefits include more reliable and consistent tax calculation results, faster propagation of configuration changes, and a reduced risk of different pods returning inconsistent outcomes during cache refresh periods. This enhancement is particularly valuable for customers with frequent configuration updates or high-volume transaction environments where calculation accuracy and consistency are critical.

The current release supports an "invalidation mode" clustered cache model. Support for "replicated mode" caching is planned for a future release.

The DA Dashboard has been enhanced to provide visibility into DA Mothership configuration and synchronization status directly from the Instance Details screen. Previously, dashboard information was limited primarily to DA client-side deployments. With this enhancement, administrators can now monitor Mothership activities and synchronization processes that support content distribution to DA client environments.

The following new fields have been added:

This enhancement provides greater flexibility in how DA synchronization services are configured. Previously, a single setting controlled both the Invoice Sync and Calculation History Sync containers together, requiring customers to either enable or disable both services regardless of their individual reporting needs.

With this update, the two synchronization processes can be configured independently. This allows customers who require calculation history synchronization but do not utilize Thomson Reuters NGRA audit reporting to disable the Invoice Sync container while continuing to run Calculation History Sync.

Key benefits include improved deployment flexibility, reduced resource consumption, and the ability to run only the synchronization services required for specific business and reporting needs.

Customers should work with their ETS representative to ensure the appropriate Helm chart configuration is applied based on their deployment and audit reporting requirements.

This enhancement improves the tax engine's internal logging by replacing exception-based handling of expected business conditions, previously recorded as “Sabrix Finder Exception” messages, with more efficient conditional processing logic. As a result, the tax engine generates cleaner, more meaningful log output while reducing unnecessary processing overhead.

Key benefits include improved tax calculation performance, reduced log noise, and more accurate application monitoring. Expected business conditions are now distinguished from genuine system errors, making operational dashboards and monitoring tools easier to interpret. Customers may also experience fewer false-positive alerts in application performance monitoring (APM) solutions such as Dynatrace, enabling support teams to focus on issues that require attention.

This enhancement expands DA Store's international tax content coverage beyond Canada and Mexico to support all major jurisdictions available within ONESOURCE tax content. DA Store can now synchronize and apply tax rules for transactions across a broad range of international markets, including GCC countries, China, Taiwan, Australia, New Zealand, Brazil, Vietnam, the United Kingdom, European countries, Chile, and India.

With this expanded coverage, physical retailers can deploy DA Store globally while maintaining accurate, localized tax calculations at the point of sale. This helps reduce the need for separate tax calculation solutions across regions and supports a more consistent and compliant tax determination process worldwide.

Customers planning international deployments should work with their Thomson Reuters ETS representative to identify the countries required for their implementation and ensure the appropriate tax content is configured and synchronized during onboarding.

The following topics outline previously identified issues that have been resolved in this release.

This enhancement resolves an installation issue affecting customers deploying DA on Google Kubernetes Engine (GKE) using Google Artifact Registry (GAR). The installer was unable to process Google Cloud Platform (GCP) Service Account JSON keys for registry authentication, causing image downloads to fail during the installation process. As a result, the installation cron job could not retrieve the required Helm charts, preventing successful deployment. The update adds support for the JSON key format required by GAR, enabling successful authentication and installation in GKE environments.

This update enhances the security and resiliency of the DA platform by addressing critical and high severity vulnerabilities identified within the application and its underlying technology stack. Multiple framework and dependency upgrades have been implemented to supported versions, reducing exposure to known security risks while improving platform stability, maintainability, and compliance. Collectively, these updates remediate 218 Common Vulnerabilities and Exposures (CVEs), further strengthening the overall security posture of the platform. Detailed CVE information and affected components are available upon request.

This enhancement improves tax engine performance for high-volume DA deployments by optimizing the use of cached data and reducing unnecessary database activity. Previously, many transactions were unable to effectively leverage the cache, resulting in excessive database lookups that could contribute to processing delays and timeouts.

The update resolves cache key inconsistencies, reduces duplicate cache entries, optimizes repeated data retrieval operations, and introduces dedicated cache regions for frequently accessed information. These improvements help increase cache utilization, reduce database load, and improve overall transaction processing efficiency.

Key benefits include faster tax calculations, improved scalability for high-volume transaction workloads, reduced database contention, and enhanced application responsiveness, helping customers achieve more consistent processing performance under heavy load.

The topics below describe known issues in this release.