Epsilon Site Tag Setup Guide

This article describes how to set up the Epsilon Site Tag in your Tag Management account.

Tag configuration

Go to the tag marketplace and add the Epsilon Site Tag. For more information about adding a tag, see Manage tags.

When adding the tag, configure the following settings:

Domain and Tag Path: The domain used within the tag. Refer to the tagging document provided by Epsilon.
Reverse Proxy Directory Path: If you are using a reverse proxy, enter its path (for example /tag_path, or the custom path you have set up as the root of your reverse proxy).
Company ID: The company ID dtm_cid.
Secondary Company ID: dtm_cmagic.
Form ID: dtm_fid.
Integration Type: The available settings are Default or Limited. Limited integrations should only be used if specified by Epsilon.
SPA Support: When enabled, the dtm_clear_tag=all query string parameter is included on all requests.

Data mappings send values from data layer variables to the corresponding variables in the vendor tag. For more information, see About data mappings.

The available categories are:

Variable	Type	Description
`tag_domain`	String	Domain.
`tag_path`	String	Reverse proxy directory path.
`dtm_cid`	String	Company ID.
`dtm_cmagic`	String	Secondary company ID.
`dtm_fid`	String	Form ID.
`integration_type`	Boolean	Integration type.
`spa_support`	Boolean	SPA support.

Variable	Type	Description
`dtm_promo_id`	String	Promo ID.
`dtmc_tcf_string`	String	GDPR consent string.
`dtm_email_hash`	String	Email hash.
`dtm_user_id`	String	User ID.
`custom.myvar`	String	Custom.
`dtm_cookie_id`	String	Send the Cookie ID as a query parameter.

Variable	Type	Description
`dtmc_department`	String	Department.
`dtmc_category`	String	Category.
`dtmc_sub_category`	String	Sub-Category.
`dtmc_product_id`	String	Product ID.
`dtmc_brand`	String	Manufacturer brand.
`dtmc_upc`	String	Manufacturer UPC.
`dtmc_mpn`	String	Manufacturer model part number.

Variable	Type	Description
`dtmc_conv_type`	String	Conversion type.
`dtmc_conv_store_location`	String	Store location.
`dtmc_transaction_id` (Overrides `_corder`	String	Order ID.
`dtm_conv_val` (Overrides `_csubtotal`	String	Order subtotal.
`dtm_conv_curr` (Overrides `_ccurrency`	String	Order currency.
`product_id` (Overrides `_cprod`	Array	Product IDs.
`product_quantity` (Overrides `_cquan`	Array	Product quantities.
`product_unit_price` (Overrides `_cprice`	Array	Product prices.
`product_discount` (Overrides `_cpdisc`	Array	Product discount amount.
`dtm_items.myvar`	Array	Custom items attributes.

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This page was last updated: November 10, 2026