Overcoming the "TLS & Security Wall": E-Invoicing, Tax & Open Banking for Dynamics AX 4.0
Keep your proven Dynamics AX 4.0 system compliant with mandatory government e-invoicing portals (Peppol, KSeF, ZATCA, SDI) and modern Open Banking APIs — without replacing your core finance system.
A European manufacturing group runs a rock-solid, tailored Microsoft Dynamics AX 4.0 environment for its financial ledger, invoicing, and treasury operations. However, new tax and regulatory rules require real-time electronic integration with government e-invoicing platforms (such as Peppol, Poland KSeF, Italy SDI, or KSA ZATCA) and automated Open Banking cash reconciliation.
Because AX 4.0 was built on a 2006-era technology stack, it cannot natively connect using modern TLS 1.3 security, sign in via OAuth 2.0 / Microsoft Entra ID, or format standard ISO date-and-time stamps.
- Target ERP Version
Microsoft Dynamics AX 4.0 (SP1 / SP2)
- Connected Platforms
Peppol / KSeF E-Invoicing, Avalara & Open Banking
- Key Financial Data
Customer Invoices, Vendor Balances & Payment Journals
- Date/Time Handling
Automatic Standard Date & Time Conversion
Why This Matters to Your Business
Modern Finance on AX 4.0
Connect your proven AX 4.0 finance system reliably and fast to mandatory government e-invoicing portals and Open Banking platforms — while keeping 100% of your core accounting and voucher controls intact.
Clearance & Cash in Seconds
Invoices, tax clearances, and bank settlements arrive in seconds in strict sequence — so your finance team and sales reps always see up-to-the-second customer balances without waiting for manual file uploads.
Scalable & Industry-Standard
Built on industry-standard OData v4 REST, TLS 1.3, and Microsoft Entra ID (OAuth 2.0) security — giving AX 4.0 a scalable, reusable integration foundation for every financial and regulatory partner.
A Modern .NET 8 OData v4 Gateway in Front of AX 4.0
1. Modern TLS 1.3 & Entra ID Security
The DEAX4 Web API runs on a modern 64-bit .NET 8 server with full TLS 1.3 and Microsoft Entra ID (OAuth 2.0) security. External e-invoicing and banking platforms talk to a modern OData v4 REST API while AX 4.0 remains safely protected on your internal network.
2. Automatic Date & Time Formatting
DEAX4 automatically combines AX 4.0's separate date and time fields into standard ISO-8601 timestamps on outbound reads, and splits them back into native AX 4.0 date and time fields on inbound writes — with zero custom coding required from your team.
3. Safe X++ Voucher & Tax Write-Back
When an e-invoicing gateway returns an official clearance number or an Open Banking feed sends settled customer payments, DEAX4 queues the message and runs native AX 4.0 voucher numbering, payment journal validation, and invoice settlement rules through its supervised worker pool.
Why AX 4.0 Is Cut Off from Modern Cloud & Government APIs
Blocked by TLS 1.3 & OAuth 2.0
AX 4.0 runs on .NET 2.0 and older Windows networking libraries that cannot negotiate modern TLS 1.2/1.3 encryption or OAuth 2.0 cloud sign-ins required by today's tax, banking, and government portals.
Separate Date & Time Columns
Unlike newer versions of AX, AX 4.0 stores dates and times in two separate columns (with time stored as seconds since midnight), which breaks modern cloud JSON APIs that expect standard combined timestamps.
Manual Bank & Tax File Uploads
Your finance team wastes hours manually exporting bank files and re-typing e-invoice clearance numbers because writing directly into AX 4.0 journal tables via SQL breaks AX voucher numbering.
Business Outcomes on Dynamics AX 4.0
Without DEAX4Pressure to spend millions replacing your ERP just to meet mandatory e-invoicing and TLS 1.3 security rules
With DEAX4Full compliance with modern e-invoicing and banking APIs while keeping your proven AX 4.0 system intact
Without DEAX4Fragile custom scripts struggle with AX 4.0's split date/time fields and voucher number sequences
With DEAX4Automatic standard timestamp formatting and 100% native AX 4.0 payment and journal validation