EVENTFLOW FE · TECHNICAL DOCUMENTATION · 01
EventFlow FE Overview
EventFlow FE is an electronic invoicing platform for Paraguay’s SIFEN environment. It executes the fiscal document lifecycle while maintaining explicit boundaries between fiscal authority, product integration and independent operational processing.
System definition
EventFlow FE is the fiscal execution component of the EventFlow platform family for electronic invoicing in Paraguay. It owns the product-side fiscal transaction lifecycle and its integration with SIFEN.
Primary responsibilities
| Responsibility | EventFlow FE role |
|---|---|
| Fiscal document preparation | Construct and validate the product representation required for fiscal processing |
| Electronic representation | Generate the fiscal electronic document required by the integration lifecycle |
| Digital signing | Apply the configured signing capability before fiscal submission |
| QR generation | Generate the QR information associated with the fiscal document lifecycle |
| SIFEN interoperability | Submit, query and interpret responses through the applicable fiscal integration path |
| Fiscal status | Represent the current authority result inside the product |
| Operational evidence | Expose product activity through a bounded integration surface for independent observation |
Fiscal execution lifecycle
The fiscal lifecycle progresses from document preparation to the authority outcome. Each stage represents a distinct product responsibility and produces state that can be inspected independently from subsequent stages.
The detailed state model is specified in 04. Document Lifecycle. SIFEN-specific responsibilities are specified in 05. SIFEN Interoperability.
System boundaries
EventFlow FE executes fiscal operations; SIFEN remains the fiscal authority.
Operational runtime processing is outside the fiscal transaction boundary. Runtime availability is not a prerequisite for fiscal document execution.
Architecture position
EventFlow FE participates in the broader EventFlow technology architecture through a product-specific integration boundary.
Operational characteristics
- Explicit fiscal lifecycle states
- Separated SIFEN interoperability boundary
- Independent operational observation
- Durable runtime processing outside the fiscal transaction path
- Idempotent runtime handling of previously processed observations
- Recovery of runtime processing across independent executions
- Production validation against the fiscal environment
Production status
EventFlow FE has completed end-to-end fiscal validation in the SIFEN production environment, including document generation, signing, QR generation, submission and authority approval.
The independent operational runtime has also demonstrated autonomous observation of production activity with durable persistence, checkpoint continuity and duplicate-safe processing. Validation evidence is documented in 12. Production Validation.