> ## Documentation Index
> Fetch the complete documentation index at: https://docs.etrnl.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Update

<Note>
  If tags have been programmed to this URL, you cannot make changes to the customUrl value.
  This would make deprogramming tags impossible as we wouldn't be able to accurately identify the tag's dynamic parameters.
</Note>

<br />

## Headers

<ParamField header="API-Key" placeholder="Your Private API Key" type="string" required>
  Your organization's private API key.
</ParamField>

## URL Params

<ParamField path="id" placeholder="URL Group ID" type="string" required>
  The ID of the URL Group.
</ParamField>

## JSON Request Body

<ParamField body="customUrl" placeholder="My Website" type="string">
  The custom URL definition that will be programmed into the tags.
</ParamField>

<ParamField body="name" placeholder="https://example.com/{tagId}/?enc={enc}&cmac={cmac}&eCode={eCode}" type="string">
  The name of your custom URL group.
</ParamField>

<ParamField body="appName" placeholder="My Website" type="string">
  This is the service that's used to add the custom URL.
  The custom URL group will show up in the programmer as \[APP Name] - Name.
</ParamField>

<ResponseExample>
  ```json Updated Successfully theme={null}
  {
  	success: true,
  	err: '',
  	group: {
  		name: "Updated Group Name",
  		appName: "ETRNL",
          organizationId: 33,
          creationDate: "2023-09-26T18:44:59.000Z",
  		customUrl: "https://example.com/{tagId}/?enc={enc}&cmac={cmac}&eCode={eCode}"
  	}
  }
  ```
</ResponseExample>