GSC Merchant listings error: ProductGroup.description too long (JSON-LD) – excee

Hello Nicolas,
I’m getting Google Search Console emails for Merchant listings / structured data:

“The length of the string value for field ‘description’ is invalid (in ‘<parent_node>’).”

On this product page, HikaShop outputs JSON-LD with @type: "ProductGroup" and the description field contains almost the entire long product content (tables + FAQs + full copy), so the string exceeds Google’s 5000 character limit for description.

URL: www.hermanosgaliano.es/comprar/papel-secamanos

In the page source:

@type: "ProductGroup"

description: "<very long text…>" (over 5000 chars)

Could you please update the structured data generator so that:

ProductGroup.description is capped to <= 5000 characters (ideally 500–1000), and

optionally strips HTML / excessive whitespace, or uses a shorter “short description” field if available,
so it complies with Google Merchant/structured data requirements and avoids GSC errors?

Thanks!

Additional GSC warning to address (missing field):
Google Search Console also reports: “Missing field productGroupID (in <parent_node>)”.

In your JSON-LD output, the parent node is @type: "ProductGroup". Please include a stable, unique productGroupID in that ProductGroup node (e.g., the parent product SKU or the internal HikaShop product ID), so it complies with Google Product variants structured data requirements.

Hi,

Thank you for reporting this.

Regarding the description too long issue: we've added a fix that normalizes whitespace and truncates the JSON-LD description to 5000 characters (Google's limit) for both Product and ProductGroup entries.
This applies to the main product description as well as each variant description.

Regarding the missing productGroupID: this was already addressed in a previous update. The ProductGroup node now includes productGroupID set to the parent product's SKU code.

Both fixes will be available in the next HikaShop update, which we plan to release in the next few days.

Thanks so much.