EU Product Identifiers

Part of the EU Customs Reform - Product Identifiers (PID).

On Centra, standardcode is read automatically from the native Centra barcode field (GTIN for DTC, EAN for Checkout API) — no custom attribute needed for it. mididentifier is stored on each variant using the ge_variant_data custom attribute. Both are mapped at checkout. Your SKU is already sent separately, so there is no new SKU field to add. Do not use the US MID fields for EU PID.

For what each identifier is, see The three identifiers on the overview page.

What you need to do

1. Create the Global-e attribute type. In Centra, navigate to System, then Configuration, click Create attribute type

   

   and add ge_variant_data (Global-E Variant Information) using the definition below.

   {
     "desc": "Global-E Variant Information",
     "readonly": false,
     "group": "variation",
     "elements": {
       "mid_identifier": {
         "type": "input",
         "desc": "Global-E Manufacturer Product Code"
       }
     }
   }
   

2. Populate the values per variant. Open the product, navigate to the Variants tab and click on the variant name, then Custom attributes. On each variant, fill Global-E Manufacturer Product Code when you have a value to send.

   

3. DTC merchants only: navigate to Platform, then Stores management, then Stores,

   

   open your store, then Plugins, then DTC API, then View.

   

   Under Display item attributes, search global-e variant and select Global-E Manufacturer Product Code

   

   then click Save.

   

   Checkout API merchants skip this step.

4. Place a test order and confirm the values appear when populated and are omitted when blank.

Sent as	What it holds	When to leave it out
standardcode	The barcode for that size, read from the native GTIN (DTC) or EAN (Checkout API) field in Centra	When the native barcode field is empty — the key is omitted automatically.
mididentifier	The manufacturer’s product code for that variant	Never. This is required on every line.

Where standardcode comes from

API	Source
DTC (GraphQL)	Native GTIN field on each size/item in Centra. Populated via your ERP or PIM integration.
Checkout API	Native EAN field on each size in Centra. Visible in the product editor under Variants → Manage Stock → Size Info.

No custom attribute configuration is required for standardcode. If the native field is empty, the key is omitted automatically.

EAN field location in Centra

EAN is entered per size under Manage Stock → Size Info on each product variant in Centra.

Key points

One pair of values per variant. Populate each variant that can appear in the cart. A value on the parent product alone is not enough when the variant has no value of its own.

In Centra you see Global-E Manufacturer Product Code under Custom attributes on the variant. The integration maps it to mididentifier (lowercase) at checkout. standardcode is mapped automatically from the native barcode field — no custom attribute needed.

The catalog setup is the same for DTC (GraphQL) and Checkout API. DTC has one extra step: select Global-E Manufacturer Product Code under store, DTC API, Display item attributes, then Save.

Omit, don’t fake. When a variant has no value, leave it blank. Never enter an empty placeholder such as NA, 0 or -.

When values are read: at checkout. Updated variant values apply on that SKU’s next checkout.

Quick check before go-live

Check	Done
ge_variant_data attribute type created	☐
Global-E Manufacturer Product Code populated on each variant	☐
Native EAN (Checkout API) or GTIN (DTC) filled for each size in Centra	☐
standardcode and mididentifier appear in SendCart when values exist	☐
Keys omitted (not empty) when a variant has no value	☐
Each variant in the cart sends its own pair	☐
DTC only: Global-E Manufacturer Product Code selected under store, DTC API, View, and saved	☐