How to sign a TunisieTradeNet invoice with DIGIGO

The TunisieTradeNet electronic signature is a key step to secure an electronic invoice and prove its integrity. If you use a DIGIGO certificate, the goal is to make the process repeatable: generate the invoice in the correct format, sign it, then store and transmit the document reliably. Here is a simple, field-tested method to sign a TunisieTradeNet invoice without unnecessary complexity.

Step 1 — Prepare a clean TEIF invoice

Before signing, make sure the invoice is correct: customer, items, VAT, totals and numbering. In Tunisia, the TEIF format structures this data as XML. A properly generated TEIF invoice reduces the risk of errors and makes signing smoother.

Step 2 — Obtain and configure DIGIGO

DIGIGO is the certificate used for electronic signing. The key point is configuration: identities, permissions, environment, and access. In a company, this also means defining who is allowed to sign and how the team validates an invoice before signing.

Step 3 — Sign and verify

A signature is only useful if it can be verified. After signing, check that the signed document matches the invoice you actually issued. The objective is to be able to prove: “this document is the one we issued, and it has not been modified”.

Step 4 — Operationalize the workflow with Billown

The best way to save time is to integrate signing into the workflow: issuance → signing → submission → archiving. Billown helps you chain these steps coherently, while keeping traceability and reducing manual handling. This is especially useful if you combine invoicing with stock management, a POS, and debt collection.

If you’re starting out, begin by signing a small batch of test invoices, then formalize the process for your team. Compliance becomes easier when the procedure is clear and stable.