SIGN IT - Key changes in SIGN IT 2026-06-01 – fiskaly-support (EN)

Below is an overview of the key changes introduced in SIGN IT 2026-06-01.

New required X-Api-Version Header
The latest version is 2026-06-01.
Introduced DEGRADED mode for Taxpayers (from June 19)
When a persistent Fisconline credential error is detected at record submission, the Taxpayer automatically transitions from OPERATIVE to DEGRADED and further submissions are blocked until the issue is resolved.
Learn more: What is DEGRADED mode and how to recover

Structure change for RECEIPT and CORRECTION

- New required totals.vat field (at operation level) replacing the old total_vat (at document level). The semantics are the same as before: it contains the aggregate VAT amount, the VAT-exclusive subtotal, and the VAT-inclusive grand total.

Former versions

"operation": {
  "type": "RECEIPT",
  "document": {
    "number": "REC-001",
    "total_vat": {
      "amount": "4.45454545",
      "exclusive": "20.54545455",
      "inclusive": "25.00"
    }
  },
  "entries": [...],
  "payments": [...]
}

From version 2026-06-01

"operation": {
  "type": "RECEIPT",
  "document": {
    "number": "REC-001"
  },
  "totals": {
    "vat": {
      "amount": "4.45454545",
      "exclusive": "20.54545455",
      "inclusive": "25.00"
    }
  },
  "entries": [...]
  "payments": [...]
}

- New required breakdown field.
It contains the same VAT values as totals.vat, but broken down by VAT rate. This is especially useful when a transaction includes items with different VAT rates.

"operation": {
  "type": "RECEIPT",
  "breakdown": [
  {
    "type": "VAT_RATE",
    "code": "STANDARD",
    "percentage": "22.00",
    "amount": "4.40",
    "exclusive": "20.00",
    "inclusive": "24.40"
  },
  {
    "type": "VAT_RATE",
    "code": "REDUCED_1",
    "percentage": "10.00",
    "amount": "0.05454545",
    "exclusive": "0.54545455",
    "inclusive": "0.60"
  }
]
}

unit.price is now an object with two fields — inclusive and exclusive — instead of a single string value (inclusive only). This change provides greater clarity on tax-inclusive and tax-exclusive pricing.

Former versions

"entries": [
  {
    "type": "SALE",
    "data": {
      "type": "ITEM",
      "text": "Margherita pizza",
      "unit": {
        "quantity": "2",
        "price": "12.20"
      }

From version 2026-06-01

"entries": [
  {
    "type": "SALE",
    "data": {
      "type": "ITEM",
      "text": "Margherita pizza",
      "unit": {
        "quantity": "2",
        "price": {
          "inclusive": "12.20",
          "exclusive": "10.00"
        }
      }

New INVOICE value added to the concept field on OUTSTANDING payments.
Set this value for "ongoing service provisions with invoice issuance at the end of the period".

"payments": [
        {
          "type": "OUTSTANDING",
          "details": {
            "amount": "2.00"
          },
          "concept": "INVOICE"
        }
      ]