# Tax identifier component

Use the `drb2b_taxIdentifier` component to collect tax identifiers from shoppers and allow them to apply saved tax identifiers. You can configure this component in the flow. 

You can publish an event to show or hide the tax identifier component.

### Publish the Tax identifier component events

Complete the following tasks to publish various event types. The event purpose and payload will vary depending on the use case.

Import `DigitalRiverMessageChannel__c message` channel and message service into a custom JavaScript file as shown below.

{% code title="Import example" %}

```
import dr_lms from "@salesforce/messageChannel/digitalriverv3__DigitalRiverMessageChannel__c";

import {publish, MessageContext } from "lightning/messageService";

```

{% endcode %}

Declare the message context variable as shown below.

{% code title="Declare variable example" %}

```
@wire(MessageContext) messageContext;
```

{% endcode %}

Publish the event.

{% code title="Event publishing example" %}

```
publish(this.messageContext, dr_lms, { 
                    purpose: '<purpose>',           
                    payload: '<payload>'            
                });

```

{% endcode %}

Refer to the following table for more information on the Tax identifier component events.

| Event purpose         | Event payload example | Description                                                                                      |
| --------------------- | --------------------- | ------------------------------------------------------------------------------------------------ |
| toggleShowTIComponent | {"isShow":true}       | Publish this event to show {"isShow":true} or hide {"isShow":false} the Tax identifier component |


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