PrestaShop How to add SKU MPN GTIN Products information

Got it 👍 This is a very common (and important) requirement for PrestaShop—especially for Google Merchant / SEO / structured data.

I’ll break it down cleanly 👇

1️⃣ What are SKU, MPN, GTIN in PrestaShop?

👉 In PrestaShop:

• SKU = Reference
• GTIN = EAN-13 / UPC / ISBN
• MPN = NOT available by default (needs customization)

2️⃣ How to Add SKU (Reference)

Admin path:

Back Office → Catalog → Products → Edit product

➡️ Go to Options / Stock / Details tab (varies by version)

• Reference → This is your SKU
• Can be set per combination also

✅ Already built-in – no extra module needed.

3️⃣ How to Add GTIN (EAN / UPC / ISBN)

PrestaShop already supports GTIN fields 👇

Admin path:

Catalog → Products → Edit → Options

Available fields:

• EAN-13 → GTIN-13
• UPC → GTIN-12
• ISBN → Books only

💡 Google accepts any ONE GTIN.

4️⃣ How to Add MPN (Manufacturer Part Number)

❌ PrestaShop does NOT have MPN by default
✅ You must add it manually (3 ways)

🔹 Option A: Use a Module (Easiest)

Search in Addons marketplace:

• “MPN Product Field”
• “Extra Product Fields”
• “Google Merchant Center modules”

These modules:

• Add MPN field in product page
• Support combinations
• Automatically inject into schema

✔ Best if you don’t want coding

🔹 Option B: Add MPN as a Product Feature (No Code)

Back Office → Catalog → Attributes & Features → Features

1. Add new feature:
   • Name: MPN
2. Assign value per product

❗ Downside:

• Not ideal for Google schema unless you customize theme
• Treated as descriptive data, not technical

🔹 Option C: Add Custom Database Field (Best / Advanced)

Add MPN as a real product field.

1️⃣ Database

ALTER TABLE ps_product ADD mpn VARCHAR(64);

2️⃣ Override Product class

/override/classes/Product.php

public $mpn;

public static $definition = array(
    'table' => 'product',
    'primary' => 'id_product',
    'fields' => array(
        'mpn' => array('type' => self::TYPE_STRING, 'size' => 64),
    ),
);

3️⃣ Add input field in admin product form

(override AdminProductsController)

⚠️ Needs override index rebuild:

Advanced Parameters → Performance → Clear cache

✔ Best for:

• Google Merchant
• JSON-LD schema
• Multi-language not required

5️⃣ Showing SKU / MPN / GTIN on Product Page

Edit your theme file:

📄 themes/your-theme/templates/catalog/product.tpl

Example:

{if $product.reference}
<p><strong>SKU:</strong> {$product.reference}</p>
{/if}

{if $product.ean13}
<p><strong>GTIN:</strong> {$product.ean13}</p>
{/if}

{if $product.mpn}
<p><strong>MPN:</strong> {$product.mpn}</p>
{/if}

6️⃣ Adding SKU, MPN, GTIN in JSON-LD (Very Important)

Since you care about schemas (I remember 😉), this is crucial.

Example Product Schema:

"sku": "SKU123",
"mpn": "MPN-456",
"gtin13": "8901234567890"

In PrestaShop theme:
📄 templates/_partials/microdata-jsonld.tpl

Make sure:

• sku → reference
• mpn → custom field
• gtin13 / gtin12 → ean13 / upc

7️⃣ Google Merchant Rules (Important)

8️⃣ Best Practice (Recommended Setup)

✔ SKU → Reference
✔ GTIN → EAN-13 / UPC
✔ MPN → Custom field (Option C)
✔ Brand → Manufacturer
✔ Schema JSON-LD → Enabled