Applicable products: Netmarkets

📣 TikTok Shop - News - Action required by 31 October 2026: Mandatory product identifiers for GSPOP EU

TikTok Shop has introduced mandatory product identifier requirements for its Global Shop POP (GSPOP) cross-border programme. This requirement applies only if you ship products directly from outside the European Union to consumers located within the EU (domestic EU-to-EU sales and other programmes are not affected). If you are concerned, you must ensure your catalogue data is compliant in Lengow before the deadline.

Compliance deadline: 31 October 2026

From 1 November 2026, products lacking compliant identifier data risk listing rejections, platform enforcement, customs-declaration errors, customs-clearance failure, import rejection, and associated logistics losses.

Scope and impact

This update applies exclusively to cross-border merchants operating via GSPOP (Global Selling Platform Open Plan) who import and dispatch goods directly from non-EU origins to EU customers.

Scope limitation

Domestic EU-to-EU sales and standard non-cross-border channels are not affected by this requirement.

Marketplace requirements

For every applicable SKU exported to TikTok Shop via Lengow, merchants must provide at least one valid product identifier. You have two options:

Identifier Option	Lengow Attributes & Specifications
Option 1: Standard Product Identifier (S-PID) Recommended for new listings	You must map both attributes in Lengow: "identifier_code.code": The identifier value. "identifier_code.type": The standard type (must be GTIN, EAN, UPC, or ISBN). The code value must match the standard validation format of the chosen type.
Option 2: Compliant Seller SKU (NS-PID) Mandatory for existing active products without standard identifiers	Map and populate the mandatory "seller_sku" attribute. The value must strictly follow these rules: Length must be between 6 and 50 characters. Use letters and numbers only (alphanumeric). No spaces or special characters (characters such as "-", "/", "_", or "." are strictly prohibited). Must match the declared product and maintain full traceability.

Identifier Option

Lengow Attributes & Specifications

Option 1: Standard Product Identifier (S-PID)
Recommended for new listings

You must map both attributes in Lengow:

"identifier_code.code": The identifier value.
"identifier_code.type": The standard type (must be GTIN, EAN, UPC, or ISBN).

The code value must match the standard validation format of the chosen type.

Option 2: Compliant Seller SKU (NS-PID)
Mandatory for existing active products without standard identifiers

Map and populate the mandatory "seller_sku" attribute. The value must strictly follow these rules:

Length must be between 6 and 50 characters.
Use letters and numbers only (alphanumeric).
No spaces or special characters (characters such as "-", "/", "_", or "." are strictly prohibited).
Must match the declared product and maintain full traceability.

Note on M-PID

The Marketplace Product Identifier (M-PID) is generated directly by TikTok Shop. No attribute mapping or manual configuration is required in Lengow for M-PID.

Required merchant action plan

Audit your catalogue: Identify all SKUs targeted at the EU via your TikTok Shop GSPOP integration.
Map standard codes (Option 1): If you possess valid GTIN, EAN, UPC, or ISBN values, map them to "identifier_code.code" and set the corresponding "identifier_code.type" in your TikTok Shop attribute mapping.
Format Seller SKUs (Option 2): If standard codes are unavailable, or if you are updating products already published to TikTok Shop, adapt your "seller_sku" field so that it contains only alphanumeric characters (6–50 characters, no symbols or hyphens).
Publish and monitor: Trigger a manual feed synchronisation towards TikTok Shop and inspect your Lengow error reports to resolve any validation discrepancies prior to 31 October 2026.

Official TikTok Shop documentation

For complete regulatory context and further technical details, refer to the official TikTok Shop announcement.

Updated October 28, 2026 16:04