Admin / Improvement

Italy / Sardinia
"Province" definition update

Reflects the restoration of Sardinia's administrative divisions enacted in June 2025. The new province "Gallura Nord-Est Sardegna (OT)" is now selectable, and the former "Carbonia-Iglesias (CI)" has been renamed "Sulcis Iglesiente".

On this page
  1. Understand in 30 seconds: What changed
  2. Before / after of the change
  3. Background: Restoration of Sardinia's administrative divisions
  4. Where it applies: Checkout and the Address API
  5. Impact by merchant / partner
  6. 5 points engineers should know
  7. 3 use cases you can put to work
  8. A one-line summary you can use in proposals

1Understand in 30 seconds: What changed

Shopify updated Italy'sSardinia province definitionsto match the administrative-divisionrestorationenacted in June 2025.
The new province "Gallura Nord-Est Sardegna(OT)" has been added to the options, and the former "Carbonia-Iglesias(CI)" has been renamed "Sulcis Iglesiente".
+ Added

Gallura Nord-Est Sardegna

Short code OT. It can now be selected as a province in Shopify Checkout and other surfaces.

Name change

Carbonia-Iglesias → Sulcis Iglesiente

Short code CI. The display was updated to match the official post-restoration province name "Sulcis Iglesiente".

Applies to

Shipping to Sardinia + Address API

Merchants who ship to Sardinia will see the name change in Checkout. Partners using the Address API will see improved accuracy in province assignment.

2Before / after of the change

BEFORE(~2026/05/13)
Carbonia-Iglesias
code: CI
AFTER(2026/05/14~)
Sulcis Iglesiente
code: CI (code unchanged)
BEFORE
(did not exist as an option)
—
AFTER
Gallura Nord-Est Sardegna
code: OT
What the original announcement explicitly states is the addition and renaming of display names. As for whether the code values (CI / OT) changed this time, the original article does not mention it. On this page, the code values from the original article are shown as-is in parentheses.

3Background: Restoring Sardinia's administrative divisions

Past: Consolidation of provinces Names such as Carbonia-Iglesias were in use (Previous Shopify definition) June 2025: Restoring administrative divisions Sardinia reorganized its provinces Revival of old names + finalization of new province names (Italian administrative policy) 2026/05/14: Shopify applies the change Province definition data updated: Gallura Nord-Est Sardegna added Carbonia-Iglesias → Sulcis Iglesiente

* The details of the administrative reorganization (the full scope of exactly which former provinces were restored or merged) arenot documentedin the original article. The only content of this release is the two items Shopify applied above.

4Affected areas: Checkout and the address API

Checkout address entry

For merchants who ship to Sardinia,the province dropdown on the checkout screenshows the updated province names. No additional steps are required from buyers.

API

Address validation / autocomplete API

In partner integrations that use the address validation / autocomplete API,province assignment for Sardinian addresses becomes more accurate.

A specific list of the target API names (such as AddressInput in the GraphQL Admin API / the Storefront checkout API) isnot documentedin the original article. They are referred to only by the feature categories "address validation" and "autocomplete".

5Impact by merchant / partner type

RoleImpactAction needed
Merchants who ship to Sardinia The province name display in Checkout is updated. Some customers will start selecting the new province "Gallura Nord-Est Sardegna". Generally none Already applied by Shopify
Stores that store address data in their own database Past orders with "Carbonia-Iglesias" and new orders with "Sulcis Iglesiente" may coexist. Review recommended Check your record-matching logic
Partners / apps that use the address API Province assignment accuracy for Sardinian addresses improves. New code OT may appear in the response. Needs verification Province code whitelist
Shipping labels / OMS / accounting integration The province master data in the integrated systems (carriers, tax) may still use the old definitions. Needs review Depends on the matching key (province name or code)

65 key points engineers should know

IT

1. The impact is limited to "Sardinia, Italy"

There are no changes to province definitions in other regions or countries. Even globally deployed stores will see effectively no impact unless they ship to Sardinia.

2. Province names on past orders are not retroactively updated

Since renamings like this usually apply only going forward, build your reports on the assumption that past orders retain the "Carbonia-Iglesias" label. The original article gives no explicit mention of retroactivity:Not stated.

OT CI

3. Use the province code (OT/CI) as the key

Province names change over time. For address matching and tax master integration,match on the code rather than the display nameis the more robust design.

API

4. Address validation / autocomplete are affected

The new definitions will appear in the responses of the address validation API / autocomplete API that partners use. It's safest to prepare one test address and run a regression check.

5. Existing code that handles the old name "Carbonia-Iglesias" needs review

In the storefront / admin / custom apps,places where the province name string is hardcoded(validation, label printing, address display, region-specific tax rate settings, etc.) need to be updated to support "Sulcis Iglesiente". Also check that the new province "Gallura Nord-Est Sardegna" isn't being treated as disallowed.

73 use cases you can apply to your work

Province ▼
USE CASE 1

"Lightweight address maintenance" for Italy-facing e-commerce stores

Challenge
You have a steady volume of purchases shipping to Italy, and you want to eliminate the risk that orders from Sardinia lead to province-name mismatches or "I can't select my province" complaints.
Action
Let Shopify's standard province dropdown handle it, and take inventory of any province lists or address-validation regexes overridden in your custom theme. Add the new province "Gallura Nord-Est Sardegna" and the new name "Sulcis Iglesiente" to your allowlist.
Result
Prevents address-entry errors and shipping delays for orders from Sardinia.
Technical note
In your themes and apps, address.province the quickest way is to use `grep` to find where it's handled.
tax_zone CI → Sulcis OT → Gallura ...
USE CASE 2

"Province master sync" with external OMS / accounting / shipping systems

Challenge
The OMS / carrier management / accounting SaaS integrated with Shopify each maintain their own province master data. If Shopify's name change isn't propagated downstream, order sync will throw province-mismatch errors.
Action
Check whether the integration's matching key is the "province name".Match on ISO-style province codes (CI / OT)switch over, and add the new code OT to the whitelist across all systems.
Impact
Reduces the effort of handling sync errors that arise every time a place name changes or administrative boundaries are reorganized.
Technical notes
The specific API names arenot statedin the original article, so measure the actual values of Admin GraphQL's `MailingAddress.provinceCode` and the order webhook payload in a sandbox before migrating.
SHIPPING LABEL OT / Sulcis
USE CASE 3

"Province master update notification" to cross-border shipping BPOs / logistics partners

Challenge
If the 3PLs/forwarders handling European delivery and customs brokerage print labels or prepare customs documents based on an outdated province master, shipments may be returned due to address mismatches.
Action
Citing this release, share a master-update request with your contracted 3PLs and customs brokers for "Sulcis Iglesiente (formerly CI)" and "Gallura Nord-Est Sardegna (OT)." Check actual samples to confirm the new names are reflected in the bundled shipping label templates (PDF).
Impact
Reduces returns and re-delivery costs caused by address mismatches on Sardinia shipments, and improves compliance.
Technical notes
Shopify caught up about a year after the local administrative districts were restored in June 2025. For the same reason, 3PLs are likely behind as well, so it's safer to check proactively.

8One-line summary for proposals

"Shopify has followed Sardinia's administrative district restoration (June 2025).
The new province "Gallura Nord-Est Sardegna (OT)" is now selectable, and the former "Carbonia-Iglesias (CI)" has been renamed to "Sulcis Iglesiente."
No work is required on the merchant side, but for projects that use address APIs, OMS, or 3PLs, it's wise to reviewprovince-code matching and master updates in external systems."