Key changes in SIGN IT 2025-08-12
With the release of the latest version of the SIGN IT API, SIGN IT 2025-08-12, some important changes have been introduced.
The documentation for SIGN IT 2025-08-12 is part of our **Unified API (UAPI). **Please note that this documentation already covers both France and Italy.
Key changes from version 2024-10-31 to 2025-08-12
Base URL
The new version uses the Unified API sub-domain:** **
TEST: test.api.fiskaly.com
LIVE: live.api.fiskaly.com
Required **X-Api-Version** Header
This header is now mandatory, and the latest version is 2025-08-12.
Records Structure Change
The details field in the Records has been moved one level deeper: from content.details to content.operation.details
Record PDF Retrieval
It is now possible to retrieve the Record PDF (compliance.artifact) as generated in the *Fatture e Corrispettivi *portal. See this article for details: Can I obtain the generated record PDF via API?
**New Entity field – ****fiscalization.credentials.tax_id_number**
This new tax_id_number field allows taxpayers to differentiate between the tax ID of the business and that of the Fisconline user (the person authorized to operate on behalf of the business and holding the Fisconline credentials). This supports new AdE authentication flows that previously resulted in Transmission error: unsupported Agenzia delle Entrate (AdE) flow
Both fields are supported in POST /entities and PATCH /entities.
Attached to this article, you will find a PDF that provides a detailed explanation of the Entity fields required for fiscalization.
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