> For the complete documentation index, see [llms.txt](https://docs.rmhpos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rmhpos.com/store-manager/manage-items/serialized-items/setting-up-serialized-items.md).
# Configure and add serialized items
Serialized items are items that have a unique serial number associated with them. Examples of serialized items include cell phones, laptops, tablets, modems, TV streaming devices, and certain types of cards (e.g., SIM cards, phone cards). This topic describes all steps required to set up serialized items in RMH.
## Configure store rules for serial numbers
1. Click **File** | **Configuration**.
2. Click **Store Rules**.
3. Expand **Serial Number Options**.
4. Select any of the following options:
* **Allow POS serial number creation:** Select this option if you want enable cashiers to enter new serial numbers in POS when they sell vouchers. This option enables serial number creation, but does not require it.
* **Enforce unique serial numbers:** Select this option if you require cashiers to enter or select unique serial numbers in POS when they sell vouchers or use vouchers to tender transactions. When this option is selected, duplicate serial numbers cannot be entered or selected.
* **Require serial number at POS:** Select this option if you require cashiers to enter or select serial numbers in POS when they sell vouchers or use vouchers to tender transactions.
* **Require serial number when receiving inventory:** Select this option if you require employees to record the serial numbers of serialized items when receiving inventory against a purchase order.
* **Synchronize quantity with serial numbers:** Select this option if you want to update the item's quantity whenever a serial number is added on the **Serial** tab in the **Item** window.
{% hint style="info" %}
You can only enable the **Synchronize quantity with serial numbers** option if you have also enabled the **Enforce unique serial numbers**, **Require serial number at POS**, and **Require serial number when receiving inventory** options.
{% endhint %}
5. Click **Save And Close**.
## Add serialized items
1. Click **Merchandising**.
2. Click **Items**.
3. Click **New**.
4. Select **Standard Item** and click **OK**.
5. On the **General** tab:
1. For the **Item Lookup Code**, enter the UPC for the serialized item.
2. (Optional) Enter a **Description**.
3. From **Item type**, select **Serialized**.
4. Select a **Department** and **Category**.
5. Select the **Item tax**.
6. Enter the **Price** and **Cost**.
6. On the **Serial** tab:
1. Select the number of serial numbers associated with the item. The available options are **1 Serial Number**, **2 Serial Number**, or **3 Serial Number**.
2. Under **Manage Serials**, click **New**.
3. Enter the item's serial numbers in the **Serial number 1**, **Serial number 2**, or **Serial number 3** fields.
4. Click **OK**.
{% hint style="info" %}
The **Serial number 2** and **Serial number 3** fields are only activated if you selected **2 Serial Number** or **3 Serial Number** for the number of serial numbers associated with the item.
{% endhint %}
7. Click **Save And Close**.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.rmhpos.com/store-manager/manage-items/serialized-items/setting-up-serialized-items.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.