You Build the Client Integration. We Provide the APP Connectivity Layer.
Vi-M supports System Integrators, ERP implementers and technology partners that require a secure, supportable Access Point Provider pathway for transmitting compliant e-Invoice data within the fiscal e-Invoicing environment.
A Clear Division of Responsibility
APP Connectivity Without Rebuilding the Client-Side Integration
Your team may already own the ERP connector, data transformation, middleware or client implementation. You should not have to redesign that work simply because you need an APP pathway. Vi-M's role is to provide the connectivity layer and operational support required to move compliant invoice data onward reliably.
Keep Your Integration Ownership
Your SI team remains responsible for the client-facing build, business logic and source-system connection.
Use a Defined APP Interface
Pass properly structured transactions into an agreed connectivity pathway with clear technical expectations.
Operate With Visibility
Receive meaningful status, error and traceability information to support monitoring and client resolution.
Built for Technology Partners That Already Have an Integration Role
System Integrators
Teams implementing client-side e-Invoicing connectors and transaction workflows.
ERP Partners
ERP implementers that need a fiscal connectivity pathway for their client deployments.
Software Providers
Billing, accounting or industry-platform providers embedding e-Invoicing into their applications.
Enterprise Technology Teams
Internal development teams building their own integration but requiring an APP connection layer.
Your SI / Technology Team Typically Owns
- Client ERP or source-system connectivity
- Source-data extraction and mapping
- Client-specific business logic
- Middleware or application development
- Front-end workflow where applicable
- Client-side testing and user support
Define Responsibility Before Go-Live
Multi-party integrations work best when each participant knows what it owns. The APP relationship should therefore define technical hand-off points, transaction status, issue escalation, support responsibilities and how failures will be investigated across the chain.
What the Connectivity Service Should Support
The value of an APP relationship is not only the ability to transmit. It is the ability to transmit securely, understand what happened to the transaction and obtain support when something goes wrong.
Secure Connectivity
Controlled system-to-system communication using agreed authentication and access mechanisms.
Structured Transmission
Receipt and onward handling of invoice payloads that meet the agreed data and interface requirements.
Status Visibility
Transaction responses and status information that can be surfaced back into the SI or client workflow.
Error Traceability
Useful diagnostic information for rejected, failed or incomplete transactions and investigation.
Logs & Audit Support
Operational records that support transaction tracing, reconciliation and support resolution.
Post-Go-Live Support
A defined escalation path for integration issues affecting live client transactions.
A Practical Path From Technical Alignment to Production
Before connecting a live client, both parties should align the technical contract, test representative transaction scenarios and agree the support model.
Review your architecture, expected payloads, transaction volumes and integration model.
Agree connectivity, authentication, payload handling, responses and hand-off responsibilities.
Connect the SI environment and test normal, adjustment and error scenarios end-to-end.
Move the approved integration into production with clear deployment and support procedures.
Monitor live transactions, investigate exceptions and coordinate issue resolution across parties.
Representative Transaction Scenarios Matter
A connection that succeeds for one simple invoice is not necessarily production-ready. Testing should cover the transaction scenarios the client will actually generate, including adjustments and expected failures.
Typical Test Coverage
- Standard invoices
- Credit notes and debit notes
- Required-field and data validation
- Duplicate or rejected transactions
- Transmission interruptions
- Status-response handling
- Reconciliation and traceability
Connectivity Should Be Predictable, Transparent and Supportable
Clear Interfaces
Documented technical expectations and hand-off points between the SI and APP layers.
Useful Responses
Status and error information that helps the SI understand what happened to a transaction.
Defined Escalation
A support path for issues that cross integration, connectivity and fiscal-processing boundaries.
Operational Continuity
A service model designed for live transaction processing, not only the initial implementation.
Where multiple parties participate in the e-Invoicing chain, the integration and support model should make ownership clear enough that errors can be investigated without the client being passed endlessly between teams.
Explore the Wider e-Invoicing Service Architecture
Need Full SI & APP Support?
For organisations that need Vi-M to support the wider implementation journey rather than only the APP connectivity layer.
System Integrator & APP Services →Need ERP Integration Support?
Connect source-system invoice data, business logic, adjustments and responses into the end-to-end e-Invoicing process.
ERP & Accounting Integration →Need the RegTech Overview?
See how APP connectivity sits within Vi-M's wider e-Invoicing, tax technology and regulatory infrastructure offering.
E-Invoicing & RegTech Infrastructure →Keep Your Integration. Add the Connectivity Layer You Need.
If you already serve the client as System Integrator, ERP partner or technology provider, talk to Vi-M about a structured APP connectivity model that supports your implementation without displacing it.