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# FAQ entries tagged #LIFF

Can I change the company name on the bottom of the profile page?

The company name displayed on the bottom of the profile page is your Provider name. You can change your Provider name by following these steps:

  • For Certified providers (Certified providers have a certified provider badge before their company name)

    You need to submit an application to LINE, so contact your sales representative.

  • For non-Certified providers

    From the LINE Developers Console, select provider, click Settings, and from the Provider settings, and click the Edit button under Provider name.

    Provider name edit

*It will take some time before the change of provider name is reflected on your profile page.

How many channels can I create?

See The number of channels that can be created in the LINE Developers Console documentation.

Where can I find my Channel ID?

You can find your Channel ID on the LINE Official Account Manager (opens new window) or the LINE Developers Console.

  • LINE Official Account Manager (requires Admin role):

    Select account from accounts list and click Settings in the top-right corner of the page. Click Messaging API from the side menu, and you will see your Channel ID next to Channel Info.

    OAM settings

  • LINE Developers Console:

    From the LINE Developers Console, select provider, and then select channel. You can find your Channel ID under Basic settings.

    Console settings

Where can I find my Provider ID?

You can find your Provider ID on the LINE Developers Console.

  • If you have Provider Admin role:

    From the LINE Developers Console, select provider and then click Settings. You can find your Provider ID under Provider settings.

    Provider ID Admin

  • If you don't have Provider Admin role:

    From the LINE Developers Console, select provider. From the page displayed, you will see your Provider ID in the segment after /provider/ in the URL.

    Provider ID URL

How do I report an issue about the LINE Platform?

To report a problem encountered on the LINE platform or make a request for improvement, contact us using the help center's Inquiry form (opens new window). Note that we may not be able to respond to all inquiries.

If you need technical support, see How do I contact technical support for inquiring about LINE APIs? in the FAQ.

When trying social login with google account in the LIFF browser or LINE's in-app browser, an error with a status code 403 and an error code disallowed_useragent will be displayed.

In the LIFF browser and LINE's in-app browser, the user's social login with google account isn't allowed. This is because Google's OAuth 2.0 Policies (opens new window) disallow authorization requests from WebView to Google.

Therefore, when the user tries social login with google account in the LIFF browser or LINE's in-app browser, an error with a status code 403 and an error code disallowed_useragent (opens new window) will be displayed.

How can I get a user's phone number?

You can use LINE Profile+ to get a user's phone number. For more information, see LINE Profile+ scopes in the Options for corporate customers documentation.

LINE Profile+ is only available to corporate users who have completed certain applications. If you wish you use LINE Profile+, contact your sales representative or contact our Sales partners (opens new window).

Is it possible for the user IDs of users who have deleted their LINE accounts to be used again?

About the user ID issued by a certain provider, in the case that the corresponding LINE account is deleted, the same user ID won't be reused for other LINE accounts within the provider.

For more information on user IDs, see What are the user ID, group ID, room ID, and one-on-one chat ID values?

Once a user ID is issued, can it be changed at any time?

User IDs are issued by each channel provider. Once a user ID (userId) is issued for a specific provider, it won't change unless the user deletes their LINE account.

The user ID won't change even if the user transfers their LINE account to another device.

If a user deletes their LINE account and then re-creates a LINE account with the same phone number, the user ID will change.

For more information on user IDs, see What are the user ID, group ID, room ID, and one-on-one chat ID values?

What are the user ID, group ID, room ID, and one-on-one chat ID values?

The user ID used by the LINE Platform identifies a user and has the following characteristics:

  • The value is generated by the LINE Platform, not by a user. This is different from the LINE ID on LINE used to search for friends.

  • Different user IDs are generated based on the provider of the channel. As long as channels have the same provider, regardless of whether the channel is for LINE Login or Messaging API, the same user ID is used for the users of the channels.

  • The user ID value is a string that matches the regular expression, U[0-9a-f]{32}.

The group ID used for group chats and the room ID used for multi-person chats are values generated by the LINE Platform to identify group chats and multi-person chats.

The group ID is a string that matches the regular expression, C[0-9a-f]{32}, and the room ID is a string that matches the regular expression, R[0-9a-f]{32}.

In a LINE Front-end Framework (LIFF) app, the one-on-one chat ID (utou ID) is used to identify a one-on-one chat in addition to the three types of IDs mentioned above.

The one-on-one chat ID value is a string that matches the regular expression, UU[0-9a-f]{128}.

Where can I check the status of LINE API outage?

You can check the current status of a LINE API outage using these methods:

What are the differences between the LIFF browser and external browsers?

See The differences between the LIFF browser and external browser in the LIFF documentation.

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