# Creating an ID namespace source (provider services)
<a name="create-id-namespace-source-provider-services"></a>

This topic describes the process of creating an ID namespace source using the **Provider services** method. This method uses a provider service called LiveRamp. LiveRamp translates third-party encoded data from a source to a target during an ID mapping workflow. 

**Note**  
If the input data is the source, then it must have a schema mapping and an associated AWS Glue database.

**To create an ID namespace source (provider services)**

1. Sign in to the AWS Management Console and open the AWS Entity Resolution console at [https://console.aws.amazon.com/entityresolution/](https://console.aws.amazon.com/entityresolution/).

1. In the left navigation pane, under **Data preparation**, choose **ID namespaces**.

1. On the **ID namespaces** page, in the upper right corner, choose **Create ID namespace**.

1. For **Details**, do the following:

   1. For **ID namespace name**, enter a unique name.

   1. (Optional) For **Description**, enter an optional description.

   1. For **ID namespace type**, choose **Source**.

1. For the **ID namespace method**, choose **Provider services**.
**Note**  
AWS Entity Resolution currently offers the LiveRamp provider service as an ID namespace method. If you have a subscription to LiveRamp, then the status appears as **Subscribed**. For more information about how to subscribe to LiveRamp, see [Step 1: Subscribe to a provider service on AWS Data Exchange](prepare-third-party-input-data.md#subscribe-provider-service).

1. For **Data input**, choose the **AWS Region**, **AWS Glue database**, the **AWS Glue table**, and the **Schema mapping** from the dropdown list.

   You can add up to 20 data inputs.

1. To specify the **Service access** permissions, choose an option and take the recommended action.


<table>
<thead>
  <tr><th>Option</th><th>Recommended action</th></tr>
</thead>
<tbody>
  <tr><td><b>Create and use a new service role</b></td><td> <ul><li> AWS Entity Resolution creates a service role with the required policy for this table. </li><li> The default <b>Service role name</b> name is <code>entityresolution-id-mapping-workflow-&lt;timestamp&gt;</code>. </li><li> You must have permissions to create roles and attach policies. </li><li> If your input data is encrypted, choose the <b>This data is encrypted by a KMS key</b> option. Then, enter an <b>AWS KMS key</b> that is used to decrypt your data input. </li></ul> </td></tr>
  <tr><td><b>Use an existing service role</b></td><td> <ol><li> Choose an <b>Existing service role name</b> from the dropdown list. <br />The list of roles are displayed if you have permissions to list roles. <br />If you don't have permissions to list roles, you can enter the Amazon Resource Name (ARN) of the role that you want to use. <br />If there are no existing service roles, the option to <b>Use an existing service role</b> is unavailable. </li><li> View the service role by choosing the <b>View in IAM</b> external link. <br />By default, AWS Entity Resolution doesn't attempt to update the existing role policy to add necessary permissions. </li></ol> </td></tr>
</tbody>
</table>


1. (Optional) To enable **Tags** for the resource, choose **Add new tag**, and then enter the **Key** and **Value** pair.

1. Choose **Create ID namespace**.

 The ID namespace source is created. You are now ready to [create an ID namespace target](create-id-namespace-target.md).