Internal parameters

  • This document details server-side tagging event parameters for developers using server-side tagging.

  • Google Tag's internal parameters, listed in a table, should not be altered as they impact tag functionality and products like Google Ads, Google Analytics, and Floodlight.

  • The parameters, including name, type, and associated products, can change, so developers should stay updated.

  • These event data parameters are categorized by name, type (string, number, boolean, object), and the Google products they influence (Google Analytics, Google Ads, Floodlight).

This document is for developers who use server-side tagging and want to learn more about server-side tagging event parameters.

Google tags use the internal parameters listed on this page. Deleting, augmenting, or modifying these parameters may adversely affect the functionality of Google tags and downstream products (e.g. Google Ads, Google Analytics, Floodlight). The name, type, and products of all event data parameters are subject to change.

Name Type Products
x-ga-protocol_version string Google Analytics
x-ga-temp_client_id string Google Analytics
x-ga-measurement_id string Google Analytics
x-ga-gtm_version string Google Analytics
x-ga-page_id number Google Analytics
x-ga-request_count number Google Analytics
x-ga-gcs string Google Analytics
x-ga-gcd string Google Analytics, Google Ads, Floodlight
x-ga-gcu string Google Analytics
x-ga-dma boolean Google Analytics
x-ga-dma_cps string Google Analytics
x-ga-npa string Google Analytics
x-ga-did string Google Analytics
x-ga-gdid string Google Analytics
x-ga-edid string Google Analytics
x-ga-ecid string Google Analytics
x-ga-em string Google Analytics
x-ga-tfd number Google Analytics
x-ads-apve string Google Ads
x-ga-lps boolean Google Analytics
x-sst-prehit_properties object Google Analytics, Google Ads, Floodlight
x-ga-system_properties object Google Analytics
x-sst-system_properties object Google Analytics, Google Ads, Floodlight