# Using tags with SIP media applications
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The topics in this section explain how to use tags with your existing Amazon Chime SDK SIP media applications. Tags allow you to assign metadata to your AWS resources, such as SIP media applications. A tag consists of a key and an optional value that stores information about the resource, or the data retained on that resource. You define all keys and values. For example, you can create a tag key named `CostCenter` with a value of `98765` and use the pair for cost allocation purposes. You can add up to 50 tags to a SIP media application.

**Topics**
+ [Adding tags to SIP media applications](#add-tags-sip-app)
+ [Editing tags](#edit-tags-sip-app)
+ [Removing tags](#remove-tags-sip-app)

## Adding tags to SIP media applications
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You can add as many as 50 tags to existing Amazon Chime SDK SIP media applications.

**To add tags**

1. Open the Amazon Chime SDK console at [https://console.aws.amazon.com/chime-sdk/home](https://console.aws.amazon.com/chime-sdk/home).

1. In the navigation pane, under **PSTN Audio**, choose **SIP media applications**.

1. Choose the name of the SIP media application that you want use.

1. Choose the **Tags** tab, then choose **Manage tags**.

1. Choose **Add new tag**, then enter a key and optional value.

1. As needed, choose **Add new tag** to create another tag.

1. When finished, choose **Save changes**.

## Editing tags
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If you have the necessary permissions, you can edit any tags in your AWS account regardless of who created them. However, IAM policies may prevent you from doing so. 

**To edit tags**

1. Open the Amazon Chime SDK console at [https://console.aws.amazon.com/chime-sdk/home](https://console.aws.amazon.com/chime-sdk/home).

1. In the navigation pane, under **PSTN Audio**, choose **SIP media applications**.

1. Choose the name of SIP media application that you want change.

1. Choose the **Tags** tab, then choose **Manage tags**.

1. In the **Key** or **Value** boxes, enter a new value.

1. When finished, choose **Save changes**.

## Removing tags
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If you have the necessary permissions, you can remove any tags in your AWS account regardless of who created them. However, IAM policies may prevent you from doing so. 

**To remove tags**

1. Open the Amazon Chime SDK console at [https://console.aws.amazon.com/chime-sdk/home](https://console.aws.amazon.com/chime-sdk/home).

1. In the navigation pane, under **PSTN Audio**, choose **SIP media applications**.

1. Choose the name of SIP media application that you want change.

1. Choose the **Tags** tab, then choose **Manage tags**.

1. Choose **Remove** next to the tag that you want to remove.

1. Choose **Save changes**.