> For the complete documentation index, see [llms.txt](https://docs.oneid.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.oneid.xyz/beginners-guide/website/how-to-use-sub-id.md).

# How to use Sub-ID

The Sub-ID allows users to link multiple wallets to a single OneID, making it more flexible and efficient for managing your digital identity. This guide provides step-by-step instructions for creating, managing, and using Sub-IDs effectively.

## **What is a Sub-ID?** <a href="#xakt0f3n2r4u" id="xakt0f3n2r4u"></a>

A Sub-ID is a secondary ID associated with a parent OneID.&#x20;

For example, if the OneID is **oneidtest.c98**, the owner of this ID can create Sub-IDs such as:

* test1.oneidtest.c98
* test2.oneidtest.c98
* test3.oneidtest.c98

{% hint style="warning" %}

#### **Note:** <a href="#id-9nf3u5yhi2ti" id="id-9nf3u5yhi2ti"></a>

* A Sub-ID is **not an NFT**; it is just a node within the contract.
* Sub-IDs **cannot be transferred** to other users.
* The expiration date of a Sub-ID is the same as its parent OneID's expiration date.
* If the parent OneID is transferred the new owner reclaims ownership, the Sub-ID will not be removed.
* If the parent OneID expires and is registered by a new owner, all associated Sub-IDs will be removed.
* **KYC** and **Primary Name** settings are not applicable to Sub-IDs.
  {% endhint %}

## **How to Add Sub-ID**

Follow these steps to add a Sub-ID to your OneID:

**Step 1:** On the **My ID** page, click the **Add Sub-ID** button.

<figure><img src="/files/mcVORpdVQUBzewpYbfAq" alt="" width="563"><figcaption></figcaption></figure>

**Step 2:** Enter the Sub-IDs you want to create. You can add multiple Sub-IDs at once.&#x20;

{% hint style="info" %}
The minimum length for each Sub-ID is 3 characters or more
{% endhint %}

**Step 3:** Choose your payment method. Payment can be made in **C98** and **VIC** on **Viction network**, and the **Service Fee** is **$1** per Sub-ID.

![](/files/Dr5SXykPXVXEBrUOSoe6)

**Step 4:** Click on **Done** to complete the payment.

<figure><img src="/files/xTk24jKZI86Dg4v3GNH8" alt=""><figcaption></figcaption></figure>

After successfully adding Sub-IDs, they will appear on your **My ID** page

![](/files/AauHb3sSFDzfFlNCk9yr)

You can also add Sub-IDs in the **OneID detail page**

![](/files/8UnzmIRw5eDCC1dt6m2d)

## **How to Delete Sub-ID**

If you no longer need a Sub-ID, follow these steps to delete it:

**Step 1:** Click the **Trash Icon** next to the Sub-ID you want to delete.

<figure><img src="/files/r3e5WWoRH0jlWBVbC9Gx" alt=""><figcaption></figcaption></figure>

**Step 2:** Click **Confirm** and sign the transaction to complete the deletion.

![](/files/cp52Q4doEnAHdGUBFyuJ)

## **How to Link Sub-ID to Multichain Wallets**

**Step 1:** Click the **Link Wallet** button next to the Sub-ID.

![](/files/muSkj3UqPUNeJeXRmpQ2)

**Step 2:** Select the wallets you want to link. If no wallets are visible, click **Sync Wallets** to update the list from your extensions.

![](/files/vDlwi9Gm1i74uMZTiQrq)

Once linked, wallet details will appear in both the **OneID Detail** and **My ID** pages:

![OneID Detail](/files/ZvlDdulTYg7aBPSuSM0n)

![My ID](/files/c7Fb47PFfx08213x7mjQ)

## **How to Unlink Sub-ID from Multichain Wallets**

**Step 1:** On the **My ID** page, click on the Sub-ID that you wish to unlink.

**Step 2:** Click on the **Unlink Sub-ID** button.

<figure><img src="/files/Q8K4XRVQtcx21WLN3Dch" alt=""><figcaption></figcaption></figure>

**Step 3:** Click **OK** and wait for the Coin98 Wallet pop-up. Once it appears, sign the transaction to confirm the Unlink Sub-ID process.

<figure><img src="/files/bzSLTeMTHZGRUz6JrMGy" alt=""><figcaption></figcaption></figure>