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ERP & business systems · 2026 · Rollout, manuals & support

Electronic invoicing (Hacienda)

Costa Rican e-invoicing (v4.4) in production, with the user manuals to match

Architecture

  • Diagram: Odoo invoice, signed XML v4.4, Hacienda acceptance, PDF and XML to the customer

What it is

Costa Rica's tax authority (Hacienda) requires electronic invoices in its v4.4 format. Momentum's Odoo 19 runs an e-invoicing module in production; I ran the rollout and wrote the user manual and the payment-confirmation guide the team works from.

Highlights

  • User manuals for e-invoicing and payment confirmation (June 2026)