# Step 2: Create a PushTopic

Use the Developer Console to create the PushTopic record that contains a SOQL query. Event notifications are generated for updates that match the query.

1. Open the Developer Console.

2. Click **Debug** | **Open Execute Anonymous Window**.

3. In the Enter Apex Code window, paste in the following Apex code, and click **Execute**.

   ```apex
   PushTopic pushTopic = new PushTopic();
   pushTopic.Name = 'InvoiceStatementUpdates';
   pushTopic.Query = 'SELECT Id, Name, Status__c, Description__c FROM Invoice_Statement__c';
   pushTopic.ApiVersion = 68.0;
   pushTopic.NotifyForOperationCreate = true;
   pushTopic.NotifyForOperationUpdate = true;
   pushTopic.NotifyForOperationUndelete = true;
   pushTopic.NotifyForOperationDelete = true;
   pushTopic.NotifyForFields = 'Referenced';
   insert pushTopic;
   ```

   :::note
   If your organization has a namespace prefix defined, then you’ll need to preface the custom object and field names with that namespace when you define the PushTopic query. For example, `SELECT Id, Name, namespace__Status__c, namespace__Description__c FROM namespace__Invoice_Statement__c`.
   :::

   Because `NotifyForOperationCreate`, `NotifyForOperationUpdate`, `NotifyForOperationDelete` and `NotifyForOperationUndelete` are set to `true`, Streaming API evaluates records that are created, updated, deleted, or undeleted and generates a notification if the record matches the PushTopic query. Because `NotifyForFields` is set to `Referenced`, Streaming API will use fields in both the SELECT clause and the WHERE clause to generate a notification. Whenever the fields `Name`, `Status__c`, or `Description__c` are updated, a notification will be generated on this channel. For more information about `NotifyForOperationCreate`, `NotifyForOperationUpdate`, `NotifyForOperationDelete`, `NotifyForOperationUndelete`, and `NotifyForFields`, see [Event Notification Rules](/docs/platform/api-streaming/guide/event-notification-rules-intro.md).

   :::note
   In API version 28.0 and earlier, notifications are only generated when records are created or updated. The `NotifyForOperationCreate`, `NotifyForOperationUpdate`, `NotifyForOperationDelete`, and `NotifyForOperationUndelete` fields are unavailable and the `NotifyForOperations` enum field is used instead to set which record events generate a notification. For more information see [PushTopic](/docs/platform/api-streaming/guide/pushtopic.md).
   :::