> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invoca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Filter Call Data to Multiple GA4 Properties

> Use a Lookup Table to route each call's data to the correct GA4 property's Measurement ID and API Secret.

If you use Google Analytics 4 (GA4) and need call data sent to different GA4 properties depending on the call, a Lookup Table lets you route each call to the right property's Measurement ID and API Secret.

**Applies to:** Accounts with multiple GA4 properties, accounts setting up a new Google Analytics integration, and accounts migrating from Universal Analytics who currently filter call data to multiple UA properties.

## Setting up your Lookup Table

1. Work with your Invoca representative to determine the best lookup field to use for identifying which GA4 property a call's data should go to. Common choices include Location, Detected Destination, or Domain.
2. Create two new Short Text Marketing Data Fields for your GA4 Measurement ID and API Secret, using the Partner Names `ga_measurement_id` and `ga_api_secret`.
3. Create a Lookup Table with your chosen lookup field in column A, the Measurement ID field in column B, and the API Secret field in column C.
4. Fill in the table with your lookup field values and each one's associated GA4 property Measurement ID and API Secret.
5. When setting up your GA4 integration Connect App, insert the Measurement ID and API Secret fields as substitution parameters in the corresponding fields.

This ensures call data is only sent to the GA4 property associated with each call, rather than every call being sent to every property.

## Where to go next

* [Lookup Table Routing](/s/article/lookup-table-routing)