Connecting HPE Nonstop to Avalara: Automating Sales Tax with NuWave LightWave Client
~NuWave Technologies
HPE Nonstop systems power some of the world’s most critical business operations. From high-volume retail transactions to enterprise order processing, these systems are trusted for their reliability, scalability, and continuous availability.
As businesses expand across multiple states and tax jurisdictions, however, calculating sales tax accurately becomes increasingly complex. Organizations need a way to connect their existing Nonstop applications to modern tax automation services without introducing unnecessary development complexity or disrupting established workflows.
NuWave LightWave Client makes that connection possible, enabling HPE Nonstop applications to securely communicate with Avalara through REST APIs.
The Challenge: Tax Complexity Meets Integration Challenges
Businesses operating across multiple jurisdictions must account for changing tax rates, location-specific rules, product classifications, and customer exemptions. Maintaining these requirements directly within existing business applications can create ongoing development and administrative challenges.
For organizations running HPE Nonstop, integrating with cloud-based tax services presents another consideration. Custom REST API integrations often require developers to implement HTTP communication, JSON processing, authentication, and response handling, adding complexity to applications designed primarily for mission-critical transaction processing.
Rather than building these capabilities into each application, organizations can use an integration layer to connect their existing systems with modern enterprise services.
The Solution: LightWave Client + Avalara
NuWave LightWave Client provides a streamlined integration path between applications running in the HPE Nonstop Guardian environment and external REST services, including Avalara's tax automation platform.
Using familiar Guardian interprocess messaging, Nonstop applications can exchange transaction information with Avalara without requiring developers to implement the underlying REST communication and data processing themselves.
LightWave Client manages the message mapping and API communication, allowing existing applications to retain their core business logic while accessing external tax determination capabilities.
How the Integration Works
Consider a retailer processing customer orders through an HPE Nonstop application. Before completing a transaction, the application needs to obtain the applicable tax calculation.
The integration follows six steps:
Transaction initiation: The Nonstop application prepares the relevant transaction information and submits it to LightWave Client through an interprocess message.
Request mapping: LightWave Client transforms the application message into the JSON structure required by the configured Avalara REST API.
Secure communication: LightWave Client transmits the request to Avalara over HTTPS, using the authentication method required by the selected service.
Tax determination: Avalara evaluates the transaction according to its supported tax determination capabilities and the applicable configuration and rules.
Response processing: LightWave Client receives the JSON response and translates the relevant information into a message the Nonstop application can process.
Transaction completion: The application incorporates the returned tax information into the order, invoice, or other business workflow.
This approach allows organizations to incorporate cloud-based tax determination into existing transaction processing while keeping their core application logic on HPE Nonstop.
Built for Mission-Critical Environments
LightWave Client runs natively within the HPE Nonstop Guardian environment and does not require OSS. Its integration model enables existing applications to access external REST services while continuing to use familiar Nonstop messaging.
Key capabilities include:
Standards-based communication: Support for HTTP, SSL/TLS, JSON, and XML.
REST API integration: Connect Nonstop applications to external services through configured API interfaces.
Message mapping: Transform application messages into API requests and process returned responses.
Operational visibility: Access diagnostic logging, performance monitoring, process event logging, auditing, and statistics.
Nonstop integration: Extend existing applications without requiring a complete rewrite or platform replacement.
Together, these capabilities provide a practical way to connect established transaction processing environments with modern enterprise services.
Business Benefits
Reduce Development Complexity
Building and maintaining custom REST integrations can consume valuable development resources. LightWave Client provides reusable communication and message-processing functionality, reducing the need to implement these capabilities independently within each Nonstop application.
Leverage Tax Automation Expertise
Avalara provides tax determination services that organizations can integrate into their existing workflows. This allows businesses to leverage a dedicated tax platform rather than embedding and maintaining every tax rule directly within their core transaction applications.
Actual tax outcomes depend on the selected Avalara service, transaction data, and configuration.
Modernize Without Replacing Existing Applications
Organizations can preserve their investments in proven HPE Nonstop applications while extending them through modern APIs. Existing business logic and transaction workflows can remain in place as new capabilities are introduced.
Simplify Cloud Service Integration
By managing REST communication and message transformation, LightWave Client helps bridge the gap between Guardian-based applications and external cloud services. This creates a reusable integration approach that can support evolving business requirements.
Connecting the World's Most Critical Systems to WHAT'S NEXT
Modernization does not have to mean replacing the applications your business depends on.
With NuWave LightWave Client, organizations can connect HPE Nonstop applications to cloud-based services such as Avalara, extending established transaction workflows with modern tax automation capabilities.
By simplifying REST API integration, LightWave Client helps organizations reduce development complexity, preserve existing technology investments, and connect mission-critical systems to the services their businesses need.
NuWave Technologies - Connecting the world's most critical systems to WHAT'S NEXT.
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