> 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/central-manager/manage-customers/customers-synchronizing.md).
# Synchronize customer records between stores
In centrally managed stores, when a customer record is added to a store's database, it is automatically synchronized to the Central database. However, the customer record is not automatically synchronized from the Central database to other store databases. The other stores must use the **Lookup Online** function in POS to synchronize the customer record to their own store databases.
{% hint style="success" %}
If your store wants to prevent other centrally managed stores from synchronizing your store's customer records to their store databases, open Store Manager and go to **File** | **Configuration** | **Store rules** | **Customer Options** and enable the store rule **Do not allow customer lookup in RMH Central**.
{% endhint %}
1. In **POS**, tap **Customers** | **Lookup Customer**.
2. Type all or part of the customer's name in the lookup field.
3. Tap **Lookup Online**.
4. To select the customer, do one of the following:
* Tap the customer record once and tap **Select**.
* Tap the customer record twice.
The customer record is synchronized from the Central database to the store's database.
{% hint style="info" %}
The **Lookup Online** function in POS does not synchronize the customer's purchase history from other stores. Stores can only look up the customer's purchase history in their own store.
{% endhint %}
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