> ## 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.

# Google Campaign Manager Permission Error

> A 403 "forbidden" error usually means the authenticating user for the integration has changed, but not all the steps to transfer the integration to the new user have been completed.

## Symptoms

* Requests to Google Campaign Manager (GCM) aren't receiving 200 success responses, so call conversions aren't appearing in GCM.
* The integration logs show a 403 error with the message "The caller does not have permission" and reason "forbidden."

**Applies to:** Google Campaign Manager integration

## Cause

The authenticating user of the integration has typically changed, but not all the steps needed to transfer the integration to the new user have been completed.

## Resolution

Confirm the following:

1. The authenticating user of the Invoca integration is an Admin and has Insert/update offline conversion permissions in Google Campaign Manager.
2. If using the standard GCM tile integration, the GCM Profile ID tied to the Action matches the GCM Profile ID of the authenticating user.
3. If using a webhook integration, the GCM Profile ID in the webhook matches the GCM Profile ID of the authenticating user.
4. The authenticating user has access to the floodlights within GCM.

## Where to go next

* [Google Campaign Manager: Integration Overview](/s/article/jhdcp92865-698)
* [Invoca for Google Campaign Manager: Using Your Integration](/s/article/google-campaign-manager-using-integration)