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You are taken to the**App activation** step.
6. Select the **C-Growth** and **Marketing Solutions** and click **Next**.\
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You are taken to the **Authorizations** step.
7. For the **Audiences** domain, select **Manage** from the associated **Authorization** list and click **Activate app**.\
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A pop-up window will appear, prompting you to review the instructions properly to activate your Criteo app.
8. Click **Activate**.\
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Your app is now activated successfully. You are taken to the **Application details** page.
9. You are on the **App Settings** tab by default. Under **Redirect URs** , click **Create a new Redirect URI**. 
10. The **Create a new Redirect URI parameter** pop-up window will appear. Type the specific URL in the **Redirect URL** box based on your following MoEngage data center:
| Data Center | Redirect URI |
| ----------- | -------------------------------------------------------------------------------------------------------------------------- |
| DC-01 | [https://dashboard-01.moengage.com/v3/partner/oauth/callback](https://dashboard-01.moengage.com/v3/partner/oauth/callback) |
| DC-02 | [https://dashboard-02.moengage.com/v3/partner/oauth/callback](https://dashboard-02.moengage.com/v3/partner/oauth/callback) |
| DC-03 | [https://dashboard-03.moengage.com/v3/partner/oauth/callback](https://dashboard-03.moengage.com/v3/partner/oauth/callback) |
| DC-04 | [https://dashboard-04.moengage.com/v3/partner/oauth/callback](https://dashboard-04.moengage.com/v3/partner/oauth/callback) |
11. Click **Create**.\
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The Redirect URI is now successfully created.
12. Under **App credentials** , click **Create new key**.\
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Your API key credentials are now successfully downloaded.
3. Click the **Criteo Ads** tile.
4. On the **Criteo Ads** partner page, go to the**Integrate** tab.
5. Click the 
arrow and then select one of the following options:
* Create Contact List
* Update Contact List 
6. Enter the following details:
| Field | Required | Description |
| --------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| Connection name | Yes | Name of the Criteo connection. |
| Client ID | Yes | This is the Client ID of the Criteo App you downloaded earlier. If you are using an existing App, you must type the Client ID of that App. |
| Client Secret | Yes | This is the Client Secret of the Criteo app you downloaded earlier. If you are using an existing App, you must type the Client Secret of that App. |
| Advertiser ID | Yes | This is a unique numerical identifier assigned to each advertiser on the Criteo app. |
7. Click **Connect**. Your Criteo connection is now integrated.
## Step 3: Create a Campaign on MoEngage to Sync Audiences to Criteo
To create a campaign on MoEngage, perform the following steps:
1. On the left navigation menu in the MoEngage dashboard, click **Engage** , and then click **Campaigns**.
2. On the All campaigns page, click\*\*+ Create campaign\*\*.
3. On the **Create campaign** dialog box, under **Connected Apps** , click **Criteo Ads** and then click the most suitable delivery type. 
4. Under **Select audience** , click **Filter users by**.
5. On the **User property** tab, select the user segment for Criteo syncing. You can combine this with other segment criteria.
6. In step 2 of the campaign, **Content** , select the pre-configured connectors and specify the content you want to send out. Enter the following details:
| Field | Description |
| --------------- | -------------------------------------------------------------------------------------------------------- |
| **Connector** | You can perform the following actions: 
### Sync to an existing Audience on Criteo
If you want to add/remove users from an existing Audience on Criteo, you would need to provide that Audience’s ID. You can view the audience on Criteo by going into your [Criteo Audience Library](https://marketing.criteo.com/audience-manager/list/segments):
1. Click the menu in the top left corner >> **Assets** and select **Audiences**.
2. Under Audiences >> select **Audience Library** and select the **Segments** tab.
3. View your Segment ID by locating your desired Segment.
4. Note down the Segment ID from the ‘**Id** ’ column:
### Create a new Audience on Criteo
To create a new Audience on Criteo, you can use the “Create Contact List” connector below. Follow these steps:
1. Select the “Create Contact List” connector and the connection you created.
2. Enter the Audience Segment Name and other required details as stated below.
3. Run a test campaign and observe the response:
4. The highlighted ID is your Audience ID. You will need this to add or remove users to this Audience in the future. You can always find this within Cirteo by following the above steps.
1. Add user to Audience Segment
2. Remove user from Audience Segment | | | Identifiers | Select the identifier you want to send to Criteo:
- Mobile Advertiser ID **Note**: Emails will be SHA256 hashed. Email ID
| | | Google Advertising ID | Type “@” and select the user attribute that contains Mobile Ad Identifier. By default, you can use **Google Advertising ID (Android)**. | | | iOS Advertising ID | Type “@” and select the user attribute that contains Mobile Ad Identifier. By default, you can use **Advertising Identifier (iOS & Windows)**. | | 
If your test user successfully receives the message, your setup is ready.
8. Publish the campaign.
**Note**: If you're creating a new audience, do not publish the campaign.
## Step 4: View Your Criteo Audience Segments
In your Criteo Ads Manager account, select **Audience Library** **Segments** to view your audiences. The size of each audience will become visible on the Segments page after it reaches approximately 1,000 members.