The EEC Products -> GA4 Items custom variable template is a variable template for Google Tag Manager’s community template gallery.

Resource
Gallery entry
GitHub repo

Description

This template has four main options.

  • Map ecommerce object automatically - the template looks into the latest ecommerce object pushed into dataLayer, and takes its products, impressions, or promotions array (whichever is found). It returns the array mapped into the format required by the items parameter in GA4 ecommerce.
  • Map products array - Select a variable from the drop-down which returns a valid Enhanced Ecommerce products array. The variable will be mapped into the format required by the items parameter.
  • Map impressions array - Select a variable from the drop-down which returns a valid Enhanced Ecommerce impressions array. The variable will be mapped into the format required by the items parameter.
  • Map promotions array - Select a variable from the drop-down which returns a valid Enhanced Ecommerce promotions array. The variable will be mapped into the format required by the items parameter.

The items are mapped as closely as possible, using the following pairs:

EEC parameter GA4 parameter Description
id item_id or promotion_id The ID of the product, impression, or promotion.
name item_name or promotion_name The name of the product, impression, or promotion.
brand item_brand The brand of the product or impression.
variant item_variant The variant of the product or impression.
category item_category(_[2-5]) The category of the product or impression, automatically split into item_category to item_category_5.
price price The price of the product or impression.
quantity quantity The quantity of the product or impression.
list item_list_name The product list of the product or impression - taken from either the product/impression object if available, or from actionField if present there.
position index or creative_slot The index of the impression or the slot of the promotion.
creative creative_name The name of the promotion creative.

In addition to this, you can map product-scoped custom dimensions and metrics to proper item parameter names. To create a mapping, you need to provide the index number of the custom dimension or metric (e.g. the 1 in dimension1) in the first field, and then an item parameter name in the second. To map a custom metric in index 13 to an item parameter named quantity_in_stock, you’d create the mapping like this:

All custom dimensions and metrics that are not mapped will be added into the item object with their original names (so dimension17, metric23 for example).

Release notes

Date Changeset
21 October 2020 Add option to map custom dimensions and metrics to proper item parameter names.
17 October 2020 Initial release.