MICROSOFT POWER PLATFORM · IN REVIEW
Enterprise VAT Validation & Tax Compliance Native for Microsoft Power Automate, Dynamics 365 & Copilot.
Automate real-time VAT verification across all 27 EU Member States, the UK, Switzerland, and Norway. Connect upstream ERP events to downstream SharePoint evidence vaults and Teams alerts with sub-second execution.
Supported countries and validation sources
VIESAC routes every VAT number to the right official source and saves the verification result for your records.
EU VIES
Austria · Belgium · Bulgaria · Croatia · Cyprus · Czech Republic · Denmark · Estonia · Finland · France · Germany · Greece · Hungary · Ireland · Italy · Latvia · Lithuania · Luxembourg · Malta · Netherlands · Poland · Portugal · Romania · Slovakia · Slovenia · Spain · Sweden · Northern Ireland (XI)
HMRC VAT API
United Kingdom (GB)
Swiss UID Register
Switzerland (CH)
Brønnøysundregistrene
Norway (NO)
Serbian Tax Administration
Serbia (RS · PIB)
GİB e-Fatura
Turkey (TR · VKN)
Australian Business Register (ABR)
Australia (AU · ABN)
MARKETPLACE REVIEW IN PROGRESS
Microsoft Connector Under Review — Pilot Access Available Today
Our certified Microsoft Power Platform connector is currently in formal review with the Microsoft Commercial Marketplace team. You can deploy immediately today: generate your dedicated token on the VIESAC Portal, download our pre-built OpenAPI definition, or import it as a Custom Connector in your Power Apps / Power Automate environment in under 2 minutes.
Transparent Usage Limits for Enterprise Deployments
Every subscription tier includes full OpenAPI connector access, multi-registry validation, official consultation references, and SHA-256 sealed audit certificates.
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Built for Finance Architects, ERP Admins, and Compliance Teams
Integrate zero-latency tax checks into your Microsoft stack without custom code or manual spreadsheet maintenance.
Dynamics 365 Business Central & F&O
Instant verification directly inside Customer and Vendor cards. Populates official consultation references and timestamps.
Power Automate Visual Cloud Flows
Automate pre-invoice checks, branch on VALID / INVALID statuses, and post interactive Adaptive Cards in Microsoft Teams.
Microsoft Copilot Autonomous Prompts
Allow Copilot Studio agents to orchestrate tax audits, summarize exceptions, and execute batch checks using plain English prompts.
SharePoint Certified Audit Vault
Auto-archive immutable SHA-256 sealed PDF and XML audit certificates to WORM-compliant SharePoint document libraries.
Automated Verification on Vendor & Customer Posting
Trigger on-demand or automated VAT validations when new trade accounts are created. Eliminates wrong tax postings and locks 0% intra-community export deductions legally.
Branching Logic & Instant Exception Routing
Automatically archive official certificates into SharePoint when valid, and post rich Adaptive Cards in Microsoft Teams when invalid, preventing erroneous invoices before payment.
Expose High-Performance Tax Actions to Every Workflow
Our OpenAPI 3.0 connector exposes six streamlined operations optimized for Microsoft Power Platform execution limits.
createAudit
Validates a VAT identifier across national tax databases and generates an immutable audit record with an official consultation number.
listAudits
Filters and searches historical verification records by reference, date range, country, VAT number, order ID, or invoice number.
getAudit
Retrieves complete metadata for an existing audit, including company name, registered address, timestamp, and status.
downloadCertificatePdf
Fetches a tamper-proof PDF certificate cryptographically sealed with SHA-256 for audit defence and tax inspection ready proof.
downloadCertificateXml
Downloads raw upstream governmental XML response payloads required for ViDA digital reporting compliance.
getAccount
Monitors subscription quotas, monthly validation limits, and remaining credits before running large automated batch flows.
Seamless Integration Across the Entire Microsoft Cloud
One unified connector connects all your core Microsoft business productivity and enterprise ERP tools.
Power Automate
Trigger real-time checks when new vendors are onboarded, automated invoices are posted, or weekly batches are processed.
Dynamics 365 (BC & F&O)
Integrate validation into standard posting routines, sales orders, and purchase workflows without modifying core AL codebase.
Power Apps & Dataverse
Add on-demand verification buttons and real-time status badges into model-driven or canvas apps used by internal teams.
Azure Logic Apps
High-throughput enterprise cloud integration pipelines connecting multi-tenant ERPs with enterprise API gateways.
Microsoft Copilot & AI Studio
Empower autonomous AI compliance agents to monitor cross-border invoicing and detect invalid VAT IDs proactively.
Teams & SharePoint Online
Alert finance managers instantly via rich Teams Adaptive Cards and archive legal PDF audit certificates into document libraries.
How to Deploy the Microsoft Connector in 4 Simple Steps
From API credential generation to automated production flow in under five minutes.
Generate VIESAC API Key
Sign up on the VIESAC Portal and copy your dedicated Bearer API token from the developer dashboard.
Import Custom Connector
In Power Automate or Power Apps, go to Custom Connectors → Import an OpenAPI file and select swagger-microsoft.yaml.
Create Secured Connection
Enter your API key with the "Bearer " prefix. Credentials are securely encrypted in Microsoft environment properties.
Build Your Automated Flow
Add the VIESAC action into your Dynamics 365 or Dataverse flows to automate audit evidence and certificate storage.
Why Enterprise Finance Teams Running Microsoft Dynamics & Power Platform Require Automated VAT Auditing
For multinational corporations running Microsoft Dynamics 365 Finance & Operations or Business Central, maintaining compliance across cross-border B2B trade is a significant operational challenge. Under European Union VAT directives and national commercial codes (including German UStG § 6a, French CGI Art. 262 ter, and Italian DPR 633/72), supplying goods or services cross-border at 0% VAT requires definitive, timestamped proof of customer VAT status on the exact date of supply.
Relying on manual tax verification portals (such as ec.europa.eu) exposes enterprises to major compliance vulnerabilities: manual checks are labor-intensive, unlogged, lack official consultation reference numbers, and cannot scale across thousands of monthly ERP transactions. If an auditor discovers a customer’s VAT number was expired or deregistered on the invoice date, the seller faces retroactive 19% to 25% VAT assessments plus statutory interest and severe penalties.
The VIESAC Microsoft Power Platform Connector eliminates this vulnerability entirely. By connecting direct governmental endpoints (all 27 EU VIES Member States, UK HMRC, Swiss Federal Statistical Office UID, and Norway Brønnøysundregistrene MVA) into Power Automate and Dataverse, finance organizations gain complete automation. Every validation creates an immutable consultation number and cryptographically sealed SHA-256 PDF certificate that is automatically archived into SharePoint Online.
Looking ahead to the EU ViDA (VAT in the Digital Age) mandate and mandatory Digital Reporting Requirements (DRR) spanning 2026 to 2028, tax administrations will demand electronic transaction reporting in near real-time. Deploying VIESAC inside your Microsoft ecosystem establishes an airtight, inspection-ready digital audit trail that protects your company’s bottom line.
Frequently Asked Questions: Microsoft Power Platform & Dynamics 365 Connector
How does the VIESAC connector authenticate with Microsoft Power Platform?
The connector uses standard HTTP API Key authentication with the "Bearer " prefix. Your secret API token is encrypted within your Microsoft Power Platform environment credentials and is never exposed in client-side code or raw flow logs.
Can we deploy the connector in Dynamics 365 Business Central on-premises or cloud?
Yes! For Business Central Cloud (SaaS), the connector integrates seamlessly through standard Power Automate cloud flows and Dataverse business events. For on-premises deployments, you can connect via the Microsoft On-Premises Data Gateway or direct Azure Logic Apps pipelines.
Where can I find the OpenAPI / Swagger file to import into Power Automate?
You can download our pre-configured OpenAPI 3.0 specification file directly from https://viesac.eu/swagger-microsoft.yaml. In Power Automate, click "Custom Connectors", choose "Import an OpenAPI file", upload the YAML file, and your connector is ready in seconds.
How does Microsoft Copilot integrate with the VIESAC connector?
Because our connector follows OpenAPI standards with descriptive parameter annotations and operational schemas, Microsoft Copilot and AI Builder agents can automatically understand, invoke, and summarize VIESAC audit actions using natural language prompts.
Does the connector generate legally valid audit certificates for tax inspections?
Yes. For every audit check, VIESAC records official tax authority consultation numbers and generates a SHA-256 sealed PDF certificate with RFC 3161 qualified timestamps. These certificates can be automatically saved into your SharePoint Document Library for long-term audit defense.
What is the latency and throughput of the connector?
The VIESAC API averages under 300ms response time per validation. We support high-throughput batching and resilient retry mechanisms designed specifically to handle governmental tax office downtime gracefully.
Supercharge Your Microsoft Stack with VIESAC Compliance
Create your free VIESAC account for instant API access, download the OpenAPI custom connector, or contact our enterprise team for guided deployment.
Deploying across an enterprise Microsoft 365 / Azure tenant? Our integration engineers provide dedicated setup assistance.